re-raise the exception

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@1613 8e941d3f-bd1b-0410-a28a-d453659cc2b4

wst/trunk/wst_rtti_filter/rtti_filters.pas

@@ -270,6 +270,7 @@ begin
       fltr.Clear(clrNone);
     except
       fltr.Clear(clrFreeObjects);
+      raise;
     end;
   finally
     FreeAndNil(fltr);