Fix BSD IP_TOS value

Author: Ralith

src/unix/bsd/mod.rs

@@ -179,12 +179,11 @@ pub const SIG_SETMASK: ::c_int = 3;
 pub const SIG_BLOCK: ::c_int = 0x1;
 pub const SIG_UNBLOCK: ::c_int = 0x2;
 
+pub const IP_TOS: ::c_int = 3;
 pub const IP_MULTICAST_IF: ::c_int = 9;
 pub const IP_MULTICAST_TTL: ::c_int = 10;
 pub const IP_MULTICAST_LOOP: ::c_int = 11;
 
-pub const IP_TOS: ::c_int = 1;
-
 pub const IPV6_UNICAST_HOPS: ::c_int = 4;
 pub const IPV6_MULTICAST_IF: ::c_int = 9;
 pub const IPV6_MULTICAST_HOPS: ::c_int = 10;