GCC's asan spotted this:
Direct leak of 120 byte(s) in 1 object(s) allocated from:
#0 0x7f8d4f221fe0 in calloc (/lib64/libasan.so.3+0xc6fe0)
#1 0x427f55 in rpc_socket_new ../p11-kit/rpc-transport.c:100
#2 0x42bc1b in rpc_exec_connect ../p11-kit/rpc-transport.c:767