[processing] fix missing import

ghtmtt · nyalldawson · commit 9107da368e69 · 2018-04-20T18:26:33.000+10:00
diff --git a/python/plugins/processing/core/Processing.py b/python/plugins/processing/core/Processing.py
@@ -43,7 +43,8 @@
                        QgsProcessingOutputVectorLayer,
                        QgsProcessingOutputRasterLayer,
                        QgsProcessingOutputMapLayer,
-                       QgsProcessingOutputMultipleLayers)
+                       QgsProcessingOutputMultipleLayers,
+                       QgsProcessingFeedback)
 
 import processing
 from processing.core.ProcessingConfig import ProcessingConfig
