streams: make file-local functions static

The callback functions that implement the `git_stream` structure are
only used inside of their respective implementation files, but they are
not marked as `static`. Fix this.

src/streams/mbedtls.c

@@ -246,7 +246,7 @@ typedef struct {
 } mbedtls_stream;
 
 
-int mbedtls_connect(git_stream *stream)
+static int mbedtls_connect(git_stream *stream)
 {
 	int ret;
 	mbedtls_stream *st = (mbedtls_stream *) stream;
@@ -266,7 +266,7 @@ int mbedtls_connect(git_stream *stream)
 	return verify_server_cert(st->ssl);
 }
 
-int mbedtls_certificate(git_cert **out, git_stream *stream)
+static int mbedtls_certificate(git_cert **out, git_stream *stream)
 {
 	unsigned char *encoded_cert;
 	mbedtls_stream *st = (mbedtls_stream *) stream;
@@ -303,7 +303,7 @@ static int mbedtls_set_proxy(git_stream *stream, const git_proxy_options *proxy_
 	return git_stream_set_proxy(st->io, proxy_options);
 }
 
-ssize_t mbedtls_stream_write(git_stream *stream, const char *data, size_t data_len, int flags)
+static ssize_t mbedtls_stream_write(git_stream *stream, const char *data, size_t data_len, int flags)
 {
 	ssize_t written = 0, len = min(data_len, SSIZE_MAX);
 	mbedtls_stream *st = (mbedtls_stream *) stream;
@@ -321,7 +321,7 @@ ssize_t mbedtls_stream_write(git_stream *stream, const char *data, size_t data_l
 	return written;
 }
 
-ssize_t mbedtls_stream_read(git_stream *stream, void *data, size_t len)
+static ssize_t mbedtls_stream_read(git_stream *stream, void *data, size_t len)
 {
 	mbedtls_stream *st = (mbedtls_stream *) stream;
 	int ret;
@@ -332,7 +332,7 @@ ssize_t mbedtls_stream_read(git_stream *stream, void *data, size_t len)
 	return ret;
 }
 
-int mbedtls_stream_close(git_stream *stream)
+static int mbedtls_stream_close(git_stream *stream)
 {
 	mbedtls_stream *st = (mbedtls_stream *) stream;
 	int ret = 0;
@@ -345,7 +345,7 @@ int mbedtls_stream_close(git_stream *stream)
 	return st->owned ? git_stream_close(st->io) : 0;
 }
 
-void mbedtls_stream_free(git_stream *stream)
+static void mbedtls_stream_free(git_stream *stream)
 {
 	mbedtls_stream *st = (mbedtls_stream *) stream;
 

src/streams/openssl.c

@@ -572,9 +572,7 @@ typedef struct {
 	git_cert_x509 cert_info;
 } openssl_stream;
 
-int openssl_close(git_stream *stream);
-
-int openssl_connect(git_stream *stream)
+static int openssl_connect(git_stream *stream)
 {
 	int ret;
 	BIO *bio;
@@ -602,7 +600,7 @@ int openssl_connect(git_stream *stream)
 	return verify_server_cert(st->ssl, st->host);
 }
 
-int openssl_certificate(git_cert **out, git_stream *stream)
+static int openssl_certificate(git_cert **out, git_stream *stream)
 {
 	openssl_stream *st = (openssl_stream *) stream;
 	int len;
@@ -644,7 +642,7 @@ static int openssl_set_proxy(git_stream *stream, const git_proxy_options *proxy_
 	return git_stream_set_proxy(st->io, proxy_opts);
 }
 
-ssize_t openssl_write(git_stream *stream, const char *data, size_t data_len, int flags)
+static ssize_t openssl_write(git_stream *stream, const char *data, size_t data_len, int flags)
 {
 	openssl_stream *st = (openssl_stream *) stream;
 	int ret, len = min(data_len, INT_MAX);
@@ -658,7 +656,7 @@ ssize_t openssl_write(git_stream *stream, const char *data, size_t data_len, int
 	return ret;
 }
 
-ssize_t openssl_read(git_stream *stream, void *data, size_t len)
+static ssize_t openssl_read(git_stream *stream, void *data, size_t len)
 {
 	openssl_stream *st = (openssl_stream *) stream;
 	int ret;
@@ -669,7 +667,7 @@ ssize_t openssl_read(git_stream *stream, void *data, size_t len)
 	return ret;
 }
 
-int openssl_close(git_stream *stream)
+static int openssl_close(git_stream *stream)
 {
 	openssl_stream *st = (openssl_stream *) stream;
 	int ret;
@@ -682,7 +680,7 @@ int openssl_close(git_stream *stream)
 	return st->owned ? git_stream_close(st->io) : 0;
 }
 
-void openssl_free(git_stream *stream)
+static void openssl_free(git_stream *stream)
 {
 	openssl_stream *st = (openssl_stream *) stream;
 

src/streams/socket.c

@@ -69,7 +69,7 @@ static int close_socket(GIT_SOCKET s)
 
 }
 
-int socket_connect(git_stream *stream)
+static int socket_connect(git_stream *stream)
 {
 	struct addrinfo *info = NULL, *p;
 	struct addrinfo hints;
@@ -130,7 +130,7 @@ int socket_connect(git_stream *stream)
 	return 0;
 }
 
-ssize_t socket_write(git_stream *stream, const char *data, size_t data_len, int flags)
+static ssize_t socket_write(git_stream *stream, const char *data, size_t data_len, int flags)
 {
 	ssize_t ret, off = 0, len = min(data_len, SSIZE_MAX);
 	git_socket_stream *st = (git_socket_stream *) stream;
@@ -149,7 +149,7 @@ ssize_t socket_write(git_stream *stream, const char *data, size_t data_len, int
 	return off;
 }
 
-ssize_t socket_read(git_stream *stream, void *data, size_t len)
+static ssize_t socket_read(git_stream *stream, void *data, size_t len)
 {
 	ssize_t ret;
 	git_socket_stream *st = (git_socket_stream *) stream;
@@ -160,7 +160,7 @@ ssize_t socket_read(git_stream *stream, void *data, size_t len)
 	return ret;
 }
 
-int socket_close(git_stream *stream)
+static int socket_close(git_stream *stream)
 {
 	git_socket_stream *st = (git_socket_stream *) stream;
 	int error;
@@ -171,7 +171,7 @@ int socket_close(git_stream *stream)
 	return error;
 }
 
-void socket_free(git_stream *stream)
+static void socket_free(git_stream *stream)
 {
 	git_socket_stream *st = (git_socket_stream *) stream;