shorten_unambiguous_ref(): tighten up pointer arithmetic

diff --git a/archive.c b/archive.c
index 99fadc88d04ea077e5e5d6e6c065f7c54a4eddaf..346f3b2f1ab0d522638475b729274d992d5b82d5 100644 (file)
--- a/archive.c
+++ b/archive.c
@@ -440,7 +440,7 @@ static int match_extension(const char *filename, const char *ext)
         * prefix is non-empty (k.e., we don't match .tar.gz with no actual
         * filename).
         */
-       if (prefixlen < 2 || filename[prefixlen-1] != '.')
+       if (prefixlen < 2 || filename[prefixlen - 1] != '.')
                return 0;
        return !strcmp(filename + prefixlen, ext);
 }