Copy custom_headers insteach of referencing the caller's copy

src/remote.c

@@ -689,7 +689,7 @@ int set_transport_callbacks(git_transport *t, const git_remote_callbacks *cbs)
 
 static int set_transport_custom_headers(git_transport *t, const git_strarray *custom_headers)
 {
-	if (!t->set_custom_headers || !custom_headers)
+	if (!t->set_custom_headers)
 		return 0;
 
 	return t->set_custom_headers(t, custom_headers);

src/transports/http.c

@@ -211,11 +211,9 @@ static int gen_request(
 	} else
 		git_buf_puts(buf, "Accept: */*\r\n");
 
-	if (t->owner->custom_headers) {
-		for (i = 0; i < t->owner->custom_headers->count; i++) {
-			if (t->owner->custom_headers->strings[i])
-				git_buf_printf(buf, "%s\r\n", t->owner->custom_headers->strings[i]);
-		}
+	for (i = 0; i < t->owner->custom_headers.count; i++) {
+		if (t->owner->custom_headers.strings[i])
+			git_buf_printf(buf, "%s\r\n", t->owner->custom_headers.strings[i]);
 	}
 
 	/* Apply credentials to the request */

src/transports/smart.c

@@ -124,6 +124,12 @@ static int git_smart__set_custom_headers(
 	transport_smart *t = (transport_smart *)transport;
 	size_t i;
 
+	if (t->custom_headers.count)
+		git_strarray_free(&t->custom_headers);
+
+	if (!custom_headers)
+		return 0;
+
 	for (i = 0; i < custom_headers->count; i++) {
 		if (is_malformed_http_header(custom_headers->strings[i])) {
 			giterr_set(GITERR_INVALID, "custom HTTP header '%s' is malformed", custom_headers->strings[i]);
@@ -135,9 +141,7 @@ static int git_smart__set_custom_headers(
 		}
 	}
 
-	t->custom_headers = custom_headers;
-
-	return 0;
+	return git_strarray_copy(&t->custom_headers, custom_headers);
 }
 
 int git_smart__update_heads(transport_smart *t, git_vector *symrefs)
@@ -436,6 +440,8 @@ static void git_smart__free(git_transport *transport)
 
 	git_vector_free(refs);
 
+	git_strarray_free(&t->custom_headers);
+
 	git__free(t);
 }
 

src/transports/smart.h

@@ -139,7 +139,7 @@ typedef struct {
 	git_transport_message_cb error_cb;
 	git_transport_certificate_check_cb certificate_check_cb;
 	void *message_cb_payload;
-	const git_strarray *custom_headers;
+	git_strarray custom_headers;
 	git_smart_subtransport *wrapped;
 	git_smart_subtransport_stream *current_stream;
 	transport_smart_caps caps;

src/transports/winhttp.c

@@ -410,11 +410,10 @@ static int winhttp_stream_connect(winhttp_stream *s)
 		}
 	}
 
-	if (t->owner->custom_headers) {
-		for (i = 0; i < t->owner->custom_headers->count; i++) {
-			if (t->owner->custom_headers->strings[i]) {
+	for (i = 0; i < t->owner->custom_headers.count; i++) {
+		if (t->owner->custom_headers.strings[i]) {
 			git_buf_clear(&buf);
-				git_buf_puts(&buf, t->owner->custom_headers->strings[i]);
+			git_buf_puts(&buf, t->owner->custom_headers.strings[i]);
 			if (git__utf8_to_16(ct, MAX_CONTENT_TYPE_LEN, git_buf_cstr(&buf)) < 0) {
 				giterr_set(GITERR_OS, "Failed to convert custom header to wide characters");
 				goto on_error;
@@ -427,7 +426,6 @@ static int winhttp_stream_connect(winhttp_stream *s)
 			}
 		}
 	}
-	}
 
 	/* If requested, disable certificate validation */
 	if (t->connection_data.use_ssl) {