It's a good habit to use initialize a variable before adding to it

git-svn-id: http://svn.osgeo.org/qgis/trunk@14872 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: wonder

src/core/symbology-ng/qgslinesymbollayerv2.cpp

@@ -489,7 +489,7 @@ void QgsMarkerLineSymbolLayerV2::renderPolylineCentral( const QPolygonF& points,
   // find the segment where the central point lies
   it = points.constBegin();
   last = *it;
-  qreal last_at = 0, next_at;
+  qreal last_at = 0, next_at = 0;
   QPointF next;
   int segment = 0;
   for ( ++it; it != points.constEnd(); ++it )