Comment 1 for bug 719763

Slightly different this time but likely the same bug (?):

Core was generated by `./glest.bin'.
Program terminated with signal 11, Segmentation fault.

#0 0x00007fe2cab21688 in MixSomeSources (ALContext=0x16ba270, DryBuffer=<value optimised out>, SamplesToDo=<value optimised out>) at /build/buildd/openal-soft-1.12.854/Alc/ALu.c:944
 in /build/buildd/openal-soft-1.12.854/Alc/ALu.c
#0 0x00007fe2cab21688 in MixSomeSources (ALContext=0x16ba270, DryBuffer=<value optimised out>, SamplesToDo=<value optimised out>) at /build/buildd/openal-soft-1.12.854/Alc/ALu.c:944
#1 0x00007fe2cab30612 in aluMixData (device=0x7fe2cc65d010, buffer=0x7fe2b8a4b040, size=<value optimised out>) at /build/buildd/openal-soft-1.12.854/Alc/ALu.c:1373
#2 0x00007fe2cab412b0 in stream_write_callback (stream=0x16b88f0, len=14144, pdata=<value optimised out>) at /build/buildd/openal-soft-1.12.854/Alc/pulseaudio.c:437
#3 0x00007fe2c7b18367 in pa_command_request (pd=<value optimised out>, command=<value optimised out>, tag=<value optimised out>, t=0x7fe29db1f480, userdata=0x16b3cb0) at pulse/stream.c:749
#4 0x00007fe2c44ae6f6 in pa_pdispatch_run (pd=0x16b6d10, packet=<value optimised out>, creds=<value optimised out>, userdata=0x16b3cb0) at pulsecore/pdispatch.c:331
#5 0x00007fe2c7affafd in pstream_packet_callback (p=<value optimised out>, packet=0x7fe2993b3260, creds=0x16b7010, userdata=0x16b3cb0) at pulse/context.c:346
#6 0x00007fe2c44b2564 in do_read (p=0x16b6ec0) at pulsecore/pstream.c:816
#7 do_something (p=0x16b6ec0) at pulsecore/pstream.c:184
#8 0x00007fe2c7b0d3d3 in dispatch_pollfds (m=0x1633160) at pulse/mainloop.c:688
#9 pa_mainloop_dispatch (m=0x1633160) at pulse/mainloop.c:933
#10 0x00007fe2c7b0d808 in pa_mainloop_iterate (m=0x1633160, block=<value optimised out>, retval=0x0) at pulse/mainloop.c:964
#11 0x00007fe2c7b0d8b0 in pa_mainloop_run (m=0x1633160, retval=0x0) at pulse/mainloop.c:979
#12 0x00007fe2c7b1c20b in thread (userdata=0x1630ae0) at pulse/thread-mainloop.c:94
#13 0x00007fe2c44bffb8 in internal_thread_func (userdata=0x1630bc0) at pulsecore/thread-posix.c:83
#14 0x00007fe2cc188971 in start_thread () from /lib/libpthread.so.0
#15 0x00007fe2c821f92d in clone () from /lib/libc.so.6
#16 0x0000000000000000 in ?? ()