Removed unnecessary recursion in pipeline streaming.

When filters set CONTINUE_EXECUTING, the pipeline used recursion
to continue executing. I don't think that this was the original
intent. Fixed it with a 1 line change.

Change-Id: I98da463e3bde81fa10cde95a82827de357ff3f07
Merge topic 'remove-recursion-continue-executing' into master

9c95cee8 Removed unnecessary recursion in pipeline streaming.