false-positive "use-after-poison" from AddressSanitizer if Valgrind's API enabled

[erthink]

ERROR: AddressSanitizer: use-after-poison on address 0x60e00000d6a8 at pc 0x7f8e54a29694 bp 0x7ffc9852d0b0 sp 0x7ffc9852d0a0
READ of size 8 at 0x60e00000d6a8 thread T0
    #0 0x7f8e54a29693 in lber_hug_memchk_setup /home/ly/Projects/reopenldap.git/libraries/libreldap/hipagut.c:427
    #1 0x7f8e54a6168b in ber_memcalloc_x /home/ly/Projects/reopenldap.git/libraries/libreldap/memory.c:211
    #2 0x7f8e54a7a9d2 in ldap_pvt_thread_rmutex_init /home/ly/Projects/reopenldap.git/libraries/libreldap/rmutex.c:71
    #3 0x7f8e54a978e7 in ldap_pvt_thread_initialize /home/ly/Projects/reopenldap.git/libraries/libreldap/threads.c:72
    #4 0x418bf6 in main /home/ly/Projects/reopenldap.git/servers/slapd/main.c:420
    #5 0x7f8e538a582f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
    #6 0x41ce48 in _start (/home/ly/Projects/reopenldap.git/servers/slapd/.libs/lt-slapd+0x41ce48)

0x60e00000d6a8 is located 8 bytes inside of 152-byte region [0x60e00000d6a0,0x60e00000d738)
allocated by thread T0 here:
    #0 0x7f8e54fd179a in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x9879a)
    #1 0x7f8e54a61671 in ber_memcalloc_x /home/ly/Projects/reopenldap.git/libraries/libreldap/memory.c:207
    #2 0x65741f  (/home/ly/Projects/reopenldap.git/servers/slapd/.libs/lt-slapd+0x65741f)

SUMMARY: AddressSanitizer: use-after-poison /home/ly/Projects/reopenldap.git/libraries/libreldap/hipagut.c:427 lber_hug_memchk_setup
Shadow bytes around the buggy address:
  0x0c1c7fff9a80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c1c7fff9a90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c1c7fff9aa0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c1c7fff9ab0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c1c7fff9ac0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c1c7fff9ad0: fa fa fa fa f7[f7]f7 f7 00 00 00 00 00 00 00 00
  0x0c1c7fff9ae0: 00 00 00 00 00 00 f7 fa fa fa fa fa fa fa fa fa
  0x0c1c7fff9af0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c1c7fff9b00: fd fd fd fa fa fa fa fa fa fa fa fa fd fd fd fd
  0x0c1c7fff9b10: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fa
  0x0c1c7fff9b20: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd

[erthink]

Fixed in the 'devel' branch