Bug in bonus system

[Erik Auerswald]

Hi,

there seems to be a bug in the bonus system when a biplane picks up a
missile bonus.

Backtrace:

Loading level The Pit
there is no joystick 0
NOTE: message 9 to brainless plane
NOTE: message 9 to brainless plane
DEBUG: killing bonus with ring ((nil))
DEBUG: killing bonus with ring ((nil))

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1080158816 (LWP 31513)]
obj_message (obj=0x0, msg=Unhandled dwarf expression opcode 0x93
) at core/object.c:272
272       object_type_t *type = ((object_t *)obj)->type;
(gdb) bt
#0  obj_message (obj=0x0, msg=Unhandled dwarf expression opcode 0x93
) at core/object.c:272
#1  0x0805693d in message (obj=0x8270030, msg=Unhandled dwarf expression opcode 0x93
) at sprites/missile.c:77
#2  0x080527c2 in sprite_group_update (group=0x80b1168) at msg_types.h:84
#3  0x0804f4cd in game_frame () at engine/engine.c:195
#4  0x08059219 in main (argc=1, argv=0xbffff824) at tests/testengine.c:188

Erik