ui-shared: fix segfault when defbranch is NULL

Not sure if there's a better fix for this.  defbranch is
NULL here on my setup when a crawler hit an invalid URL,
causing strcmp to segfault.

Signed-off-by: Eric Wong <normalperson@yhbt.net>

diff --git a/ui-shared.c b/ui-shared.c
index b1a6c46be57f18576d3c1a57008029382f2417cb..e39d004e5d74019a26a642d5e04443936fe6769b 100644 (file)
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -253,7 +253,7 @@ static char *repolink(const char *title, const char *class, const char *page,
                }
                delim = "&";
        }
-       if (head && strcmp(head, ctx.repo->defbranch)) {
+       if (head && ctx.repo->defbranch && strcmp(head, ctx.repo->defbranch)) {
                html(delim);
                html("h=");
                html_url_arg(head);