wxKeyEvent::m_uniChar must be copied by operator= too

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30137 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/event.h

@@ -962,6 +962,9 @@ public:
         m_scanCode = evt.m_scanCode;
         m_rawCode = evt.m_rawCode;
         m_rawFlags = evt.m_rawFlags;
+#if wxUSE_UNICODE
+        m_uniChar = evt.m_uniChar;
+#endif
 
         return *this;
     }