Fixed segfault when specified invalid field type to memory provider's…

… addAttributes()

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@8738 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/providers/memory/memoryprovider.cpp

@@ -284,7 +284,7 @@ bool QgsMemoryProvider::addAttributes(const QgsNewAttributesMap & attributes)
       type = QVariant::String;
     else
     {
-      QgsDebugMsg("Field type not supported: "+type);
+      QgsDebugMsg("Field type not supported: "+typeName);
       continue;
     }