fixing -fvisibility-inlines-hidden problem (IsOk function didn't get exported)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44007 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/colour.h

@@ -31,7 +31,7 @@ public:
 
     // accessors
     bool Ok() const { return IsOk(); }
-    bool IsOk() const {return m_isInit; }
+    bool IsOk() const;
 
     unsigned char Red() const { return m_red; }
     unsigned char Green() const { return m_green; }

src/mac/carbon/colour.cpp

@@ -63,3 +63,9 @@ void wxColour::FromRGBColor( WXCOLORREF* color )
     m_blue = col->blue >> 8;
     m_green = col->green >> 8;
 }
+
+bool wxColour::IsOk() const 
+{
+    return m_isInit; 
+}
+