travis-ci: make the OSX build jobs' 'brew update' more quiet

diff --git a/builtin/fetch.c b/builtin/fetch.c
index 6ec7c07d1dc111e6370dad498bf7453b5cd2c92e..e0140327aab23654c69e7388c23a07b98b8ff913 100644 (file)
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -98,6 +98,8 @@ static int git_fetch_config(const char *k, const char *v, void *cb)
 
 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
 {
+       BUG_ON_OPT_NEG(unset);
+
        /*
         * "git fetch --refmap='' origin foo"
         * can be used to tell the command not to store anywhere