first crash in ages

[Peter Hoff]

Since ut2003 has been so stable for me since the first patch, I figured 
I should let you know when it finally did crash. I was playing Bombing 
Run online, don't remember the map. Here's the backtrace:

[ 1]  ./Core.so [0x40a0c71a]
[ 2]  /lib/libpthread.so.0 [0x40ddb12b]
[ 3]  /lib/libc.so.6 [0x40bbed68]
[ 4]  ./openal.so(async_mixer_iterate+0x54) [0x4382c91c]
[ 5]  ./openal.so [0x4383fe30]
[ 6]  /lib/libpthread.so.0 [0x40dd81b0]
[ 7]  /lib/libc.so.6(__clone+0x3a) [0x40c60e4a]
Signal: SIGFPE [floating point exception]
Aborting.