[MC-139732] Villager trade menu not opening outside of a village

The bug

Right-clicking on a villager outside of a village doesn't open the trade menu.

Game output

Error executing task
java.lang.NullPointerException
	at aqb.a(SourceFile:285)
	at agp.b(SourceFile:978)
	at aqg.a(SourceFile:1091)
	at ux.a(SourceFile:1191)
	at nn.a(SourceFile:69)
	at nn.a(SourceFile:13)
	at jq.a(SourceFile:15)
	at jq$$Lambda$2262/1552350401.run(Unknown Source)
	at qp.run(SourceFile:18)
	at net.minecraft.server.MinecraftServer.q(SourceFile:646)
	at net.minecraft.server.MinecraftServer.p(SourceFile:617)
	at net.minecraft.server.MinecraftServer.run(SourceFile:576)
	at java.lang.Thread.run(Thread.java:745)