Fixed release compiling

07:29:41 < Bircoph> socket.c: In function ‘socket_procclsyncsock’:
07:29:42 < Bircoph> socket.c:576:62: error: ‘release’ undeclared (first use in this function) socket_send(clsyncsock_p, SOCKCMD_REPLY_VERSION, VERSION_MAJ, VERSION_MIN, REVISION);