ecore_wl2_display: move wl_display_dispatch_pending before condition check.

Sometimes display ref count is not zero after wl_display_dispatch_pending.

For example, wl_data_source_listener's callback is called by wl_display_dispatch_pending.
Display ref count is not zero but display is cleaned up, it makes double free corruption.

Reviewed-by: Christopher Michael <devilhorns@comcast.net>
Differential Revision: https://phab.enlightenment.org/D12109

src/lib/ecore_wl2/ecore_wl2_display.c

@@ -965,17 +965,16 @@ EAPI void
 ecore_wl2_display_disconnect(Ecore_Wl2_Display *display)
 {
    EINA_SAFETY_ON_NULL_RETURN(display);
+   int ret;
+
+   do
+     {
+        ret = wl_display_dispatch_pending(display->wl.display);
+     } while (ret > 0);
 
    --display->refs;
    if (display->refs == 0)
      {
-        int ret;
-
-        do
-          {
-             ret = wl_display_dispatch_pending(display->wl.display);
-          } while (ret > 0);
-
         _ecore_wl2_display_cleanup(display);
 
         wl_display_disconnect(display->wl.display);