vendor/libgit2/src/config_file.h in rugged-0.19.0 vs vendor/libgit2/src/config_file.h in rugged-0.21.0

@@ -14,11 +14,12 @@
 	return cfg->open(cfg, level);
 }
 
 GIT_INLINE(void) git_config_file_free(git_config_backend *cfg)
 {
-	cfg->free(cfg);
+	if (cfg)
+		cfg->free(cfg);
 }
 
 GIT_INLINE(int) git_config_file_get_string(
 	const git_config_entry **out, git_config_backend *cfg, const char *name)
 {
@@ -40,19 +41,19 @@
 GIT_INLINE(int) git_config_file_foreach(
 	git_config_backend *cfg,
 	int (*fn)(const git_config_entry *entry, void *data),
 	void *data)
 {
-	return cfg->foreach(cfg, NULL, fn, data);
+	return git_config_backend_foreach_match(cfg, NULL, fn, data);
 }
 
 GIT_INLINE(int) git_config_file_foreach_match(
 	git_config_backend *cfg,
 	const char *regexp,
 	int (*fn)(const git_config_entry *entry, void *data),
 	void *data)
 {
-	return cfg->foreach(cfg, regexp, fn, data);
+	return git_config_backend_foreach_match(cfg, regexp, fn, data);
 }
 
 extern int git_config_file_normalize_section(char *start, char *end);
 
 #endif