fixed bug that caused the wrong keycode to be used for most,

possibly all, keysyms.  was reading past the end of an array
of keysyms.

lib/client/CXWindowsSecondaryScreen.cpp

@@ -917,7 +917,7 @@ void
 CXWindowsSecondaryScreen::updateKeycodeMap(Display* display)
 {
 	// there are up to 4 keysyms per keycode
-	static const int numKeysyms = 4;
+	static const int maxKeysyms = 4;
 
 	// get the number of keycodes
 	int minKeycode, maxKeycode;
@@ -930,6 +930,12 @@ CXWindowsSecondaryScreen::updateKeycodeMap(Display* display)
 								minKeycode, numKeycodes,
 								&keysymsPerKeycode);
 
+	// we only understand up to maxKeysyms keysyms per keycodes
+	int numKeysyms = keysymsPerKeycode;
+	if (numKeysyms > maxKeysyms) {
+		numKeysyms = maxKeysyms;
+	}
+
 	// initialize
 	KeyCodeMask entry;
 	m_keycodeMap.clear();