gtk/window: cleanup dead code around wxTranslateGTKKeyEventToWx

The previous commit made wxTranslateGTKKeyEventToWx never fail, so make it void
and remove all dead code resulting from the lack of failure.

src/gtk/window.cpp

@@ -961,7 +961,7 @@ static void wxFillOtherKeyEventFields(wxKeyEvent& event,
 }
 
 
-static bool
+static void
 wxTranslateGTKKeyEventToWx(wxKeyEvent& event,
                            wxWindowGTK *win,
                            GdkEventKey *gdk_event)
@@ -1090,8 +1090,6 @@ wxTranslateGTKKeyEventToWx(wxKeyEvent& event,
 
     // now fill all the other fields
     wxFillOtherKeyEventFields(event, win, gdk_event);
-
-    return true;
 }
 
 
@@ -1181,10 +1179,8 @@ gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),
 
     wxKeyEvent event( wxEVT_KEY_DOWN );
     bool ret = false;
-    bool return_after_IM = false;
 
-    if( wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
-    {
+    wxTranslateGTKKeyEventToWx(event, win, gdk_event);
     // Send the CHAR_HOOK event first
     if ( SendCharHookEvent(event, win) )
     {
@@ -1223,13 +1219,6 @@ gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),
     // If not an accelerator, then emit KEY_DOWN event
     if ( !ret )
         ret = win->HandleWindowEvent( event );
-    }
-    else
-    {
-        // Return after IM processing as we cannot do
-        // anything with it anyhow.
-        return_after_IM = true;
-    }
 
     if ( !ret )
     {
@@ -1252,9 +1241,6 @@ gtk_window_key_press_callback( GtkWidget *WXUNUSED(widget),
         }
     }
 
-    if (return_after_IM)
-        return FALSE;
-
     // Only send wxEVT_CHAR event if not processed yet. Thus, ALT-x
     // will only be sent if it is not in an accelerator table.
     if (!ret)
@@ -1382,11 +1368,7 @@ gtk_window_key_release_callback( GtkWidget * WXUNUSED(widget),
     wxPROCESS_EVENT_ONCE(GdkEventKey, gdk_event);
 
     wxKeyEvent event( wxEVT_KEY_UP );
-    if ( !wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
-    {
-        // unknown key pressed, ignore (the event would be useless anyhow)
-        return FALSE;
-    }
+    wxTranslateGTKKeyEventToWx(event, win, gdk_event);
 
     return win->GTKProcessEvent(event);
 }