Fix diff mode switching when side-by-side-diffs=1

When side-by-side-diffs=1 was set in cgitrc, specyfing 'ss=0' in the query-
string would not switch to unified diffs. This patch fixes the issue by
introducing a separate variable to track the occurrence of "ss" in the
querystring.

1 files changed, 1 insertions, 0 deletions

@@ -133,6 +133,7 @@ struct reflist {
 struct cgit_query {
         int has_symref;
         int has_sha1;
+        int has_ssdiff;
         char *raw;
         char *repo;
         char *page;