vim-patch:8.0.0629: set starting earlier

The patch is N/A but we include it for consistency.
closes #9814

---
Problem:    Checking for ambigous width is not working. (Hirohito Higashi)
Solution:   Reset "starting" earlier.
6b1da3312e

src/nvim/main.c

@@ -547,10 +547,11 @@ int main(int argc, char **argv)
   if (params.n_commands > 0)
     exe_commands(&params);
 
+  starting = 0;
+
   RedrawingDisabled = 0;
   redraw_all_later(NOT_VALID);
   no_wait_return = FALSE;
-  starting = 0;
 
   // 'autochdir' has been postponed.
   do_autochdir();