config: mark otherwise unused function as file-scope static

git_configset_get_pathname() is only used once inside config.c; we do
not have to expose it as a public function.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: gitster

config.c

@@ -1954,7 +1954,7 @@ int git_configset_get_maybe_bool(struct config_set *set, const char *key, int *d
 		return 1;
 }
 
-int git_configset_get_pathname(struct config_set *set, const char *key, char **dest)
+static int git_configset_get_pathname(struct config_set *set, const char *key, char **dest)
 {
 	const char *value;
 	if (!git_configset_get_value(set, key, &value, NULL))

config.h

@@ -564,7 +564,6 @@ int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned lon
 int git_configset_get_bool(struct config_set *cs, const char *key, int *dest);
 int git_configset_get_bool_or_int(struct config_set *cs, const char *key, int *is_bool, int *dest);
 int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest);
-int git_configset_get_pathname(struct config_set *cs, const char *key, char **dest);
 
 /**
  * Run only the discover part of the repo_config_get_*() functions