parse_color: refactor color storage

diff --git a/builtin/update-index.c b/builtin/update-index.c
index b0503f4e3d80de42b3b31858303a8e0cbda2b9e4..e8c7fd4d4957b83de42e7af2ef9f2676bfc294b2 100644 (file)
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -640,6 +640,9 @@ static int parse_new_style_cacheinfo(const char *arg,
        unsigned long ul;
        char *endp;
 
+       if (!arg)
+               return -1;
+
        errno = 0;
        ul = strtoul(arg, &endp, 8);
        if (errno || endp == arg || *endp != ',' || (unsigned int) ul != ul)