ANSI mode compilation fix

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48988 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/dcpsg.cpp

@@ -1241,7 +1241,7 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y )
     wxCHECK_RET( m_ok, wxT("invalid postscript dc") );
 
     const wxWX2MBbuf textbuf = text.mb_str();
-    if (textbuf.data() == NULL)
+    if ( !textbuf )
         return;
 
     if (m_textForegroundColour.Ok())
@@ -2011,7 +2011,7 @@ void wxPostScriptDC::DoGetTextExtent(const wxString& string,
     const wxWX2MBbuf strbuf = string.mb_str();
 
     // conversion failed (non e.g. ISO characters)
-    if (strbuf.data() == NULL)
+    if ( !strbuf )
         return;
 
 #if !wxUSE_AFM_FOR_POSTSCRIPT