avoid pulling the event out of the queue and putting it right back when typing.. working on linux performance bug 26502 r=beard

widget/src/gtk/nsGtkEventHandler.cpp

@@ -25,7 +25,6 @@
 #include "nsWindow.h"
 
 #include "nsScrollbar.h"
-#include "nsIFileWidget.h"
 #include "nsGUIEvent.h"
 
 #include "nsTextWidget.h"
@@ -676,19 +675,19 @@ gint handle_key_release_event(GtkObject *w, GdkEventKey* event, gpointer p)
   // the next event in the queue is a key press event and it has the
   // exact same timestamp as the current event.
 
-  // get the next event
-  nextEvent = gdk_event_get();
+  // get a copy of the next event
+  nextEvent = gdk_event_peek();
   // see if it's a key press event and if the time matches.
-  if (nextEvent && (nextEvent->type == GDK_KEY_PRESS) && (nextEvent->key.time == event->time))
+  if (nextEvent)
   {
+    if ((nextEvent->type == GDK_KEY_PRESS) && (nextEvent->key.time == event->time))
+    {
       shouldDrop = PR_TRUE;
       // the next key press event shouldn't generate a key down event.
       // this is a global variable
       suppressNextKeyDown = PR_TRUE;
-  }
-  if (nextEvent) {
-    // put makes a copy so we're safe doing this.
-    gdk_event_put(nextEvent);
+    }
+
     // free the event since we just got a copy.
     gdk_event_free(nextEvent);
   }