Don't test for key code being valid unnecessarily.

The key code was already found to be valid just above, so suppress Coverity
warning about an always true test by not checking it again. This also makes
the code more clear.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73148 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/window.cpp

@@ -842,7 +842,7 @@ wxTranslateGTKKeyEventToWx(wxKeyEvent& event,
     event.m_keyCode = key_code;
 
 #if wxUSE_UNICODE
-    event.m_uniChar = gdk_keyval_to_unicode(key_code ? key_code : keysym);
+    event.m_uniChar = gdk_keyval_to_unicode(key_code);
     if ( !event.m_uniChar && event.m_keyCode <= WXK_DELETE )
     {
         // Set Unicode key code to the ASCII equivalent for compatibility. E.g.