Description of problem:
" radosgw-admin orphans finish --job-id=" crashes. Related upstream bugs are http://tracker.ceph.com/issues/13824 and http://tracker.ceph.com/issues/13888


Version-Release number of selected component (if applicable):
ceph version 0.94.5-3.el7cp 

How reproducible:
Always

Steps to Reproduce:
1.Configure radosgw and run orphans command tool.

# radosgw-admin orphans finish --job-id=test 2> findfinish.txt
Segmentation fault (core dumped)

From the output of the comamnd:

2016-01-29 07:17:31.912779 7fa407013900 20 init_complete bucket index max shards: 0
*** Caught signal (Segmentation fault) **
 in thread 7fa407013900
 ceph version 0.94.5-3.el7cp (cd5b9adaf4725d17c27dc32258778be21520e1bb)
 1: radosgw-admin() [0x6316c2]
 2: (()+0xf100) [0x7fa4037b1100]
 3: (RGWOrphanSearch::init(std::string const&, RGWOrphanSearchInfo*)+0x9e) [0x51b61e]
 4: (main()+0xbe92) [0x5010b2]
 5: (__libc_start_main()+0xf5) [0x7fa4027d4b15]
 6: radosgw-admin() [0x5064d9]
2016-01-29 07:17:31.914752 7fa407013900 -1 *** Caught signal (Segmentation fault) **
 in thread 7fa407013900

Bt on the coredump:

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `radosgw-admin orphans finish --job-id=something'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007fdab4319fcb in raise (sig=11) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:37
37	  return INLINE_SYSCALL (tgkill, 3, pid, THREAD_GETMEM (THREAD_SELF, tid),
Missing separate debuginfos, use: debuginfo-install ceph-radosgw-0.94.5-3.el7cp.x86_64
(gdb) bt
#0  0x00007fdab4319fcb in raise (sig=11) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:37
#1  0x000000000063178d in handle_fatal_signal(int) ()
#2  <signal handler called>
#3  0x000000000051b61e in RGWOrphanSearch::init(std::string const&, RGWOrphanSearchInfo*) ()
#4  0x00000000005010b2 in main ()