made the selection in the delimited text provider working again (which was broken by myself in a recent commit)

git-svn-id: http://svn.osgeo.org/qgis/trunk@5733 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/providers/delimitedtext/qgsdelimitedtextprovider.cpp

@@ -524,6 +524,7 @@ void QgsDelimitedTextProvider::select(QgsRect * rect, bool useIntersect)
   // compare each point against the rectangle.
   // We store the rect and use it in getNextFeature to determine if the
   // feature falls in the selection area
+  reset();
   mSelectionRectangle = new QgsRect((*rect));
 }