Handle REQ_NONE upfront in view_driver

It is very common during loading from pipe so deserves the small
optimization.

diff --git a/tig.c b/tig.c
index 246812f..ac2aba0 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -2178,6 +2178,11 @@ view_driver(struct view *view, enum request request)
 {
        int i;
 
+       if (request == REQ_NONE) {
+               doupdate();
+               return TRUE;
+       }
+
        if (view && view->lines) {
                request = view->ops->request(view, request, &view->line[view->lineno]);
                if (request == REQ_NONE)