[Bug SMP 162] Server crush on creeper exploding crops block.

012-01-24 00:47:16 [SEVERE] Unexpected exception
java.lang.NullPointerException
at ic2.common.BlockCrop.a_(BlockCrop.java:178)
at qn.a(Explosion.java:168)
at fy.a(WorldServer.java:162)
at fq.a(World.java:1598)
at gs.a(SourceFile:113)
at ix.m_(SourceFile:42)
at lx.d(EntityLiving.java:944)
at hm.d(SourceFile:26)
at lx.y_(EntityLiving.java:358)
at hm.y_(SourceFile:30)
at gs.y_(SourceFile:70)
at fq.a(World.java:1303)
at fy.a(WorldServer.java:38)
at fq.g(World.java:1278)
at fq.f(World.java:1175)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:441)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:346)
at cz.run(SourceFile:465)