setting selection to 0,0 in create, bug 1826548

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@49672 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/textctrl.cpp

@@ -1359,6 +1359,7 @@ bool wxMacUnicodeTextControl::Create( wxTextCtrl *wxPeer,
 {
     m_font = wxPeer->GetFont() ;
     m_windowStyle = style ;
+    m_selection.selStart = m_selection.selEnd = 0;
     Rect bounds = wxMacGetBoundsForControl( wxPeer , pos , size ) ;
     wxString st = str ;
     wxMacConvertNewlines10To13( &st ) ;