fix

Author: SteveLauC

libc-test/semver/freebsd.txt

@@ -2252,4 +2252,4 @@ close_range
 eventfd_read
 eventfd_write
 IP_RECVTTL
-IP_RECVHOPLIMIT
+IPV6_RECVHOPLIMIT

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -3610,7 +3610,7 @@ pub const IP_ORIGDSTADDR: ::c_int = 27;
 pub const IP_RECVORIGDSTADDR: ::c_int = IP_ORIGDSTADDR;
 
 pub const IP_RECVTTL: ::c_int = 65;
-pub const IP_RECVHOPLIMIT: ::c_int = 37;
+pub const IPV6_RECVHOPLIMIT: ::c_int = 37;
 pub const IP_DONTFRAG: ::c_int = 67;
 pub const IP_RECVTOS: ::c_int = 68;