stash: convert branch to builtin

diff --git a/builtin/show-ref.c b/builtin/show-ref.c
index f2eb1a7724058bb1db237a6199d16e5ff1ef495a..ed888ffa48ce1d5ef80859b8f5b3bf1720e49abd 100644 (file)
--- a/builtin/show-ref.c
+++ b/builtin/show-ref.c
@@ -1,6 +1,7 @@
 #include "builtin.h"
 #include "cache.h"
 #include "refs.h"
+#include "object-store.h"
 #include "object.h"
 #include "tag.h"
 #include "string-list.h"
@@ -150,6 +151,7 @@ static int hash_callback(const struct option *opt, const char *arg, int unset)
 static int exclude_existing_callback(const struct option *opt, const char *arg,
                                     int unset)
 {
+       BUG_ON_OPT_NEG(unset);
        exclude_arg = 1;
        *(const char **)opt->value = arg;
        return 0;