More save handling for WMS requests. Added an error string although there is string freeze, because the string is not at a visible place in the gui. Fixes bug #1434

git-svn-id: http://svn.osgeo.org/qgis/trunk@9751 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/providers/wms/qgswmsprovider.cpp

@@ -379,6 +379,13 @@ QImage* QgsWmsProvider::draw( QgsRectangle  const & viewExtent, int pixelWidth,
     crsKey = "CRS";
   }
 
+  int dcpTypeSize = mCapabilities.capability.request.getMap.dcpType.size();
+  if(dcpTypeSize < 1)
+  {
+    mError = tr("Could not determine URL for GetMap from the WMS capabilities response");
+    return 0;
+  }
+
   QString url = prepareUri( mCapabilities.capability.request.getMap.dcpType.front().http.get.onlineResource.xlinkHref );
 
   url += "SERVICE=WMS";