Fix border for wxGTK too

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@18342 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/htmlcell.cpp

@@ -428,9 +428,8 @@ void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
             wxPen mypen2(m_BorderColour2, 1, wxSOLID);
 
             int subtractMe = 1;
-            // Check on other platforms whether we should be subtracting
-            // 1. On wxMSW, we get a notch if we do.
-#ifdef __WXMSW__
+            // We get a missing pixel if subtract 1.
+#if defined(__WXMSW__) || defined(__WXGTK__)
             subtractMe = 0;
 #endif
             dc.SetPen(mypen1);