[MC-1510] Custom superflat world crashes when certain block type is chosen

I tried to make a superflat world, where the custom preset is set to only generate one layer of fire. After generating and loading the world, the client crashed, and this is the crashlog:

*****

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 31-10-12 20:00
Description: Exception in server tick loop

java.lang.StackOverflowError
	at zb.b(SourceFile:73)
	at za.c(SourceFile:332)
	at za.a(SourceFile:351)
	at za.a(SourceFile:338)
	at xe.b(SourceFile:296)
	at xe.e(SourceFile:343)
	at aiu.a(SourceFile:249)
	at xe.m(SourceFile:419)
	at xe.h(SourceFile:408)
	at xe.f(SourceFile:365)
	at xe.e(SourceFile:344)
	at aiu.a(SourceFile:249)
    ... and so on.

Relevant Details:
- Minecraft Version: 1.4.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_07, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 327751592 bytes (312 MB) / 681705472 bytes (650 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- AABB Pool Size: 11 (616 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- Is Modded: Probably not
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: 1 (56 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- Player Count: 1 / 8; [ih['zenyl'/0, l='Test', x=-379,50, y=0,62, z=-731,50]]
- World Test Entities: 0 total; []
- World Test Players: 0 total; []
- World Test Chunk Stats: ServerChunkCache: 0 Drop: 0
- Type: Integrated Server
*****

What I expected to happen was that the client would crash, which is what I got.

What actually happened was that the client crashed
Describe what happened here

Steps to Reproduce:
1. Make a custom preset for a superflat world, but only with 1 layer, of fire (51).
2. Let it load (takes some time)
3. Client crash.

This is, of course, a minor bug, but since you guys asked for bugs...