[in-place] Fix alg runner when context is none

Author: elpaso

python/plugins/processing/gui/AlgorithmExecutor.py

@@ -268,6 +268,11 @@ def execute_in_place(alg, parameters, context=None, feedback=None):
     :rtype: tuple
     """
 
+    if feedback is None:
+        feedback = QgsProcessingFeedback()
+    if context is None:
+        context = dataobjects.createContext(feedback)
+
     if not 'INPUT' in parameters or not parameters['INPUT']:
         parameters['INPUT'] = iface.activeLayer()
     ok, results = execute_in_place_run(alg, parameters, context=context, feedback=feedback)