check_filename(): use skip_prefix

This avoids some magic numbers (and we'll be adding more similar calls in a minute). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff King committed May 26, 2017 at 15:07 UTC d51c6ee0d4bbeaf28bcd6c5f1681d208ee75763d
1 file changed +2 -3
setup.c
+2 -3
@@ -137,10 +137,9 @@ int check_filename(const char *prefix, const char *arg)
137 char *to_free = NULL;
138 struct stat st;
139
140 - if (starts_with(arg, ":/")) {
141 - if (arg[2] == '\0') /* ":/" is root dir, always exists */
140 + if (skip_prefix(arg, ":/", &arg)) {
141 + if (!*arg) /* ":/" is root dir, always exists */
142 return 1;
143 - arg += 2;
143 prefix = NULL;
144 }
145