Wraps fake simulator setup in an autorelease pool

Fixes possible leak under iOS versions prior to 6

objc[84078]: Object 0x6d27670 of class __NSCFString autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug
objc[84078]: Object 0x6d273f0 of class __NSArrayM autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug