patch 8.0.0629: checking for ambigous width is not working

Problem:    Checking for ambigous width is not working. (Hirohito Higashi)
Solution:   Reset "starting" earlier.
diff --git a/src/main.c b/src/main.c
index 0c7aa98..e30701c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -792,6 +792,9 @@
     if (params.n_commands > 0)
 	exe_commands(&params);
 
+    /* Must come before the may_req_ calls. */
+    starting = 0;
+
 #if defined(FEAT_TERMRESPONSE) && defined(FEAT_MBYTE)
     /* Must be done before redrawing, puts a few characters on the screen. */
     may_req_ambiguous_char_width();
@@ -800,7 +803,6 @@
     RedrawingDisabled = 0;
     redraw_all_later(NOT_VALID);
     no_wait_return = FALSE;
-    starting = 0;
 
     /* 'autochdir' has been postponed */
     DO_AUTOCHDIR