==7564== 272 bytes in 1 blocks are possibly lost in loss record 21 of 42
==7564==    at 0x4C29E46: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==7564==    by 0x4012084: _dl_allocate_tls (dl-tls.c:297)
==7564==    by 0x623FABC: pthread_create@@GLIBC_2.2.5 (allocatestack.c:571)
==7564==    by 0x5A74AB: ast_pthread_create_stack (utils.c:1215)
==7564==    by 0x458B8C: bridge_channel_join (bridging.c:1028)
==7564==    by 0x4597AA: ast_bridge_join (bridging.c:1157)
==7564==    by 0x12DE28DE: confbridge_exec (app_confbridge.c:1736)
==7564==    by 0x5318D2: pbx_exec (pbx.c:1622)
==7564==    by 0x53C5D2: pbx_extension_helper (pbx.c:4919)
==7564==    by 0x540028: ast_spawn_extension (pbx.c:6035)
==7564==    by 0x541781: __ast_pbx_run (pbx.c:6510)
==7564==    by 0x54315C: pbx_thread (pbx.c:6840)
==7564==    by 0x5A728A: dummy_start (utils.c:1162)
==7564==    by 0x623EE99: start_thread (pthread_create.c:308)