Bug#159243: dselect segfaults on exit

[Adam Heath <doogie@debian.org>]

severity 159243 normal
tag 159243 pending
merge 159243 159023
thanks

> I get a segfault everytime I exit dselect after performing any operation.  The following backtrace is provided when dselect is run through gdb:
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x401396c0 in free () from /lib/libc.so.6
> (gdb) bt
> #0  0x401396c0 in free () from /lib/libc.so.6
> #1  0x4013cf10 in obstack_free () from /lib/libc.so.6
> #2  0x0805911a in __builtin_delete ()
> #3  0x0805b5b0 in __builtin_delete ()
> #4  0x0804da2f in __builtin_delete ()
> #5  0x400e40bf in __libc_start_main () from /lib/libc.so.6

This is fixed in 1.10.6, which is sitting in incoming.