[MC-122573] Crash due to carpet and sticky pistons

The bug

When I built this contraption seen in 2017-11-27_15.10.06.png and turned the lever, the game crashed. It also crashes with the rails.

Crash report

17w48a: crash-2017-11-28_13.27.04-client.txt

Description: Ticking entity

java.lang.StackOverflowError: Ticking entity
	at baf.a(SourceFile:136)
	at baf.b(SourceFile:127)
	at baq$a.c(SourceFile:375)
	at asl.f(SourceFile:503)
	at baq$a.d(SourceFile:390)
	at bai.a(SourceFile:377)
	at baf.b(SourceFile:129)
	at baq$a.c(SourceFile:375)
	at asl.f(SourceFile:503)
	at baq$a.d(SourceFile:390)
	at bai.a(SourceFile:377)
	at baf.b(SourceFile:129)
	at baq$a.c(SourceFile:375)
	at asl.f(SourceFile:503)
	at baq$a.d(SourceFile:390)
	at bai.a(SourceFile:377)
	at baf.b(SourceFile:129)
	at baq$a.c(SourceFile:375)
...