blind fix for temp file creation problem

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13106 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/textfile.cpp

@@ -38,6 +38,7 @@
 #endif
 
 #include "wx/textfile.h"
+#include "wx/filename.h"
 
 // ============================================================================
 // wxTextFile class implementation
@@ -172,7 +173,11 @@ bool wxTextFile::OnRead(wxMBConv& conv)
 
 bool wxTextFile::OnWrite(wxTextFileType typeNew, wxMBConv& conv)
 {
-    wxTempFile fileTmp(m_strBufferName);
+    wxFileName fn = m_strBufferName;
+    if ( !fn.IsAbsolute() )
+        fn.Normalize();
+
+    wxTempFile fileTmp(fn.GetFullName());
 
     if ( !fileTmp.IsOpened() ) {
         wxLogError(_("can't write buffer '%s' to disk."), m_strBufferName.c_str());