use CPLFree on CPLMalloc'ed memory

git-svn-id: http://svn.osgeo.org/qgis/trunk@9971 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/core/raster/qgsrasterlayer.cpp

@@ -1835,7 +1835,7 @@ bool QgsRasterLayer::identify( const QgsPoint& thePoint, QMap<QString, QString>&
       }
       theResults[tr( "Band%1" ).arg( i )] = v;
 
-      free( data );
+      CPLFree( data );
     }
   }