[b42] game crashes when entering Rak'shor pride

[lieven]

It gets to "generating the level" and then dumps core.

L(f3e0f1c0) Particle updater error a50cff0 (7, 9): /data/gfx/particles/bone_shield.lua:50: attempt to index local 'self' (a nil value)
Particle emitter error a50c0a0 (11): attempt to call a nil value
Particle emitter error a50c0a0 (11): attempt to call a nil value
Particle emitter error a50c0a0 (11): attempt to call a nil value
Particle emitter error a50c0a0 (11): attempt to call a nil value
Segmentation fault

[darkgod]

fixed