Merge pull request #6480 from libgit2/ethomson/warn

Fix some warnings in main

src/libgit2/streams/socket.c

@@ -135,7 +135,8 @@ static ssize_t socket_write(git_stream *stream, const char *data, size_t len, in
 	git_socket_stream *st = (git_socket_stream *) stream;
 	ssize_t written;
 
-	assert(flags == 0);
+	GIT_ASSERT(flags == 0);
+	GIT_UNUSED(flags);
 
 	errno = 0;
 

tests/libgit2/repo/extensions.c

@@ -3,7 +3,7 @@
 #include "sysdir.h"
 #include <ctype.h>
 
-git_repository *repo;
+static git_repository *repo;
 
 void test_repo_extensions__initialize(void)
 {

tests/libgit2/repo/objectformat.c

@@ -4,8 +4,8 @@
 #include "repository.h"
 #include <ctype.h>
 
-git_repository *repo;
-git_config *config;
+static git_repository *repo;
+static git_config *config;
 
 void test_repo_objectformat__initialize(void)
 {