Fix error when running gdal algorithms through locator

Author: nyalldawson

python/plugins/processing/gui/AlgorithmLocatorFilter.py

@@ -89,7 +89,7 @@ def triggerResult(self, result):
                 dlg.setMessage(message)
                 dlg.exec_()
                 return
-            dlg = alg.createCustomParametersWidget()
+            dlg = alg.createCustomParametersWidget(None)
             if not dlg:
                 dlg = AlgorithmDialog(alg)
             canvas = iface.mapCanvas()