wxColurRefData in x11 did not overwrite CreateRef function, so it should not use AllocExclusive(), use UnRef() instead, just like InitRGBA() function in wxGTK port did

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77781 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/x11/colour.cpp

@@ -172,7 +172,8 @@ wxGDIRefData *wxColour::CloneGDIRefData(const wxGDIRefData *data) const
 void wxColour::InitRGBA(unsigned char red, unsigned char green, unsigned char blue,
                         unsigned char WXUNUSED(alpha))
 {
-    AllocExclusive();
+    UnRef();
+    m_refData = new wxColourRefData();
 
 #if wxUSE_NANOX
     M_COLDATA->m_color.red = ((unsigned short)red) ;