don't look beyond the end of the string if it ends with a backslash in FilterInEntryName() (thanks Purify)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37004 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/fileconf.cpp

@@ -2030,8 +2030,11 @@ static wxString FilterInEntryName(const wxString& str)
   strResult.Alloc(str.Len());
 
   for ( const wxChar *pc = str.c_str(); *pc != '\0'; pc++ ) {
-    if ( *pc == wxT('\\') )
-      pc++;
+    if ( *pc == wxT('\\') ) {
+      // we need to test it here or we'd skip past the NUL in the loop line
+      if ( *++pc == _T('\0') )
+        break;
+    }
 
     strResult += *pc;
   }