Fixed a warning in PriorityQueueTest, and some dot syntax //FREEBIE
- Also simplified the comparators
Merge pull request #200 from Strilanc/warning_fix_235

Fixed a warning in PriorityQueueTest, and some dot syntax //FREEBIE
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Signal/src/audio/incall_audio/processing/JitterQueue.m
	Signal/src/contact/ContactsManager.m
	Signal/src/profiling/EventWindow.m
	Signal/test/util/PriorityQueueTest.m