builtin/blame.c: Fix a "Using plain integer as NULL pointer" warning

diff --git a/builtin/push.c b/builtin/push.c
index 08ccb891c679827aa904b6fe93a5a7d9d9bcaaae..fdfcc6c71607a7412666b7cc647db98e1b85c8c1 100644 (file)
--- a/builtin/push.c
+++ b/builtin/push.c
@@ -327,13 +327,21 @@ static int option_parse_recurse_submodules(const struct option *opt,
                                   const char *arg, int unset)
 {
        int *flags = opt->value;
+
+       if (*flags & (TRANSPORT_RECURSE_SUBMODULES_CHECK |
+                     TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND))
+               die("%s can only be used once.", opt->long_name);
+
        if (arg) {
                if (!strcmp(arg, "check"))
                        *flags |= TRANSPORT_RECURSE_SUBMODULES_CHECK;
+               else if (!strcmp(arg, "on-demand"))
+                       *flags |= TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND;
                else
                        die("bad %s argument: %s", opt->long_name, arg);
        } else
-               die("option %s needs an argument (check)", opt->long_name);
+               die("option %s needs an argument (check|on-demand)",
+                               opt->long_name);
 
        return 0;
 }