remote: drop free_refspecs() function

We already have free_refspec(), a public function which does
the same thing as the static free_refspecs(). Let's just
keep one.  There are two minor differences between the
functions:

  1. free_refspecs() is a noop when the refspec argument is
     NULL. This probably doesn't matter in practice.  The
     nr_refspec parameter would presumably be 0 in that
     case, skipping the loop. And free(NULL) is explicitly
     OK. But it doesn't hurt for us to port this extra
     safety to free_refspec(), as one of the callers passes
     a funny "i+1" count.

  2. The order of arguments is reversed between the two
     functions. This patch uses the already-public order of
     free_refspec(), as it matches the argument order on the
     parsing side.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

remote.c

@@ -477,26 +477,6 @@ static void read_config(void)
 	alias_all_urls();
 }
 
-/*
- * This function frees a refspec array.
- * Warning: code paths should be checked to ensure that the src
- *          and dst pointers are always freeable pointers as well
- *          as the refspec pointer itself.
- */
-static void free_refspecs(struct refspec *refspec, int nr_refspec)
-{
-	int i;
-
-	if (!refspec)
-		return;
-
-	for (i = 0; i < nr_refspec; i++) {
-		free(refspec[i].src);
-		free(refspec[i].dst);
-	}
-	free(refspec);
-}
-
 static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
 {
 	int i;
@@ -610,7 +590,7 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
 		 * since it is only possible to reach this point from within
 		 * the for loop above.
 		 */
-		free_refspecs(rs, i+1);
+		free_refspec(i+1, rs);
 		return NULL;
 	}
 	die("Invalid refspec '%s'", refspec[i]);
@@ -621,7 +601,7 @@ int valid_fetch_refspec(const char *fetch_refspec_str)
 	struct refspec *refspec;
 
 	refspec = parse_refspec_internal(1, &fetch_refspec_str, 1, 1);
-	free_refspecs(refspec, 1);
+	free_refspec(1, refspec);
 	return !!refspec;
 }
 
@@ -638,6 +618,10 @@ struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
 void free_refspec(int nr_refspec, struct refspec *refspec)
 {
 	int i;
+
+	if (!refspec)
+		return;
+
 	for (i = 0; i < nr_refspec; i++) {
 		free(refspec[i].src);
 		free(refspec[i].dst);