FreeBSD: add strchrnul

Author: valpackett

libc-test/semver/freebsd.txt

@@ -2110,6 +2110,7 @@ stack_t
 statfs
 strcasecmp
 strcasestr
+strchrnul
 strncasecmp
 strndup
 strsignal

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

@@ -5250,6 +5250,8 @@ extern "C" {
         rmtp: *mut ::timespec,
     ) -> ::c_int;
 
+    pub fn strchrnul(s: *const ::c_char, c: ::c_int) -> *mut ::c_char;
+
     pub fn shm_create_largepage(
         path: *const ::c_char,
         flags: ::c_int,