[processing] fixed check to avoid adding a provider that is already added

Author: volaya

python/plugins/processing/core/Processing.py

@@ -86,7 +86,7 @@ def addProvider(provider, updateList=True):
         """Use this method to add algorithms from external providers.
         """
 
-        if provider.getName() in [p.getName for p in algList.providers]:
+        if provider.getName() in [p.getName() for p in algList.providers]:
             return
         try:
             provider.initializeSettings()