Fix highly visible incorrect mapping of GTK generic file icon to TDE unknown mimetype icon

This is rammed throught the hard freeze only due to its high visibility in common GTK applications such as Firefox


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/gtk-qt-engine@1260773 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

src/qt_qt_wrapper.cpp

@@ -2177,7 +2177,7 @@ void setRcProperties(GtkRcStyle* rc_style, int forceRecreate)
 	stream << doIconMapping("gtk-dnd-multiple", "mimetypes/kmultiple.png");
 	stream << doIconMapping("gtk-edit", "actions/edit.png");  //2.6 
 	stream << doIconMapping("gtk-execute", "actions/exec.png");
-	stream << doIconMapping("gtk-file", "mimetypes/unknown.png");
+	stream << doIconMapping("gtk-file", "mimetypes/empty.png");
 	stream << doIconMapping("gtk-find", "actions/find.png");
 	stream << doIconMapping("gtk-find-and-replace", "actions/find.png");	// Is there a TDE "find and replace" icon? FIXME
 	stream << doIconMapping("gtk-floppy", "devices/3floppy_unmount.png");