apply: fix memory leak in prefix_one()

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/builtin-apply.c b/builtin-apply.c
index 053511e2ee23cc6a1db524bd0dbe3a25260f25dd..2a40af3ff042c840aa7ca10a76d29a015ca6a73b 100644 (file)
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -2502,11 +2502,13 @@ static int use_patch(struct patch *p)
        return 1;
 }
 
-static char *prefix_one(char *name)
+static void prefix_one(char **name)
 {
-       if (!name)
-               return name;
-       return xstrdup(prefix_filename(prefix, prefix_length, name));
+       char *old_name = *name;
+       if (!old_name)
+               return;
+       *name = xstrdup(prefix_filename(prefix, prefix_length, *name));
+       free(old_name);
 }
 
 static void prefix_patches(struct patch *p)
@@ -2514,8 +2516,9 @@ static void prefix_patches(struct patch *p)
        if (!prefix)
                return;
        for ( ; p; p = p->next) {
-               p->new_name = prefix_one(p->new_name);
-               p->old_name = prefix_one(p->old_name);
+               if (p->new_name != p->old_name)
+                       prefix_one(&p->new_name);
+               prefix_one(&p->old_name);
        }
 }