Bug#722146: berusky2 crashes with assertion failure

[Max Kellermann]

Package: berusky2
Version: 0.9.1-1

When no ALSA device can be opened, berusky2 crashes:

Init Sound Engine...
[New Thread 0x7fffecf69700 (LWP 26800)]
[Thread 0x7fffecf69700 (LWP 26800) exited]
AL lib: alsa_open_playback: Could not open playback device 'default':
Device or resource busy
adas_Set_Last_Error(): Unable to open device.
berusky2: adas/adas.c:170: adas_Set_Last_Error: Assertion `0' failed.

Program received signal SIGABRT, Aborted.
0x00007ffff5aea1e5 in __GI_raise (sig=sig at entry=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or
directory.
(gdb) bt
#0  0x00007ffff5aea1e5 in __GI_raise (sig=sig at entry=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007ffff5aed398 in __GI_abort () at abort.c:90
#2  0x00007ffff5ae3272 in __assert_fail_base (
    fmt=0x7ffff5c20900 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", 
    assertion=assertion at entry=0x561760 "0", 
    file=file at entry=0x570567 "adas/adas.c", line=line at entry=170, 
    function=function at entry=0x570730 "adas_Set_Last_Error") at
    assert.c:92
#3  0x00007ffff5ae3322 in __GI___assert_fail (assertion=0x561760 "0", 
    file=0x570567 "adas/adas.c", line=170, 
    function=0x570730 "adas_Set_Last_Error") at assert.c:101
#4  0x0000000000558584 in ?? ()
#5  0x000000000055abc5 in ?? ()
#6  0x00000000004467ab in ?? ()
#7  0x000000000045fd47 in ?? ()
#8  0x00000000004074ff in ?? ()
#9  0x00007ffff5ad6995 in __libc_start_main (main=0x4072c0, argc=1, 
    ubp_av=0x7fffffffe708, init=<optimized out>, fini=<optimized out>, 
    rtld_fini=<optimized out>, stack_end=0x7fffffffe6f8) at
    libc-start.c:260
#10 0x00000000004077c3 in ?? ()