Fixes a typo in the code comment of the listener subsystem.
/* listener socket options */
#define LI_O_NONE 0x0000
#define LI_O_NOLINGER 0x0001 /* disable linger on this socket */
-#define LI_O_FOREIGN 0x0002 /* permit listening on foreing addresses ("transparent") */
+#define LI_O_FOREIGN 0x0002 /* permit listening on foreign addresses ("transparent") */
#define LI_O_NOQUICKACK 0x0004 /* disable quick ack of immediate data (linux) */
#define LI_O_DEF_ACCEPT 0x0008 /* wait up to 1 second for data before accepting */
#define LI_O_TCP_L4_RULES 0x0010 /* run TCP L4 rules checks on the incoming connection */