This fixes failures seen in the reverse iteration builder:
http://lab.llvm.org:8011/builders/reverse-iteration/builds/26
Failing Tests (4):
Clang :: Analysis/MisusedMovedObject.cpp Clang :: Analysis/keychainAPI.m Clang :: Analysis/loop-unrolling.cpp Clang :: Analysis/malloc.c
SmallSetVector size has to be a power of 2. I was split between 4 and 8. I chose 4 as it's closer to 5 :)