Add `MSG_WAITFORONE.try_into().unwrap()` to deal with different type signature on musl libc (#29369)

* add try_into().unwrap() to deal with different type signature on musl libc

* add allow useless_conversion

* trailing whitespace

* cargo fmt

streamer/src/recvmmsg.rs

@@ -99,8 +99,17 @@ pub fn recv_mmsg(sock: &UdpSocket, packets: &mut [Packet]) -> io::Result</*num p
         tv_sec: 1,
         tv_nsec: 0,
     };
-    let nrecv =
+    // TODO: remove .try_into().unwrap() once rust libc fixes recvmmsg types for musl
-        unsafe { libc::recvmmsg(sock_fd, &mut hdrs[0], count as u32, MSG_WAITFORONE, &mut ts) };
+    #[allow(clippy::useless_conversion)]
+    let nrecv = unsafe {
+        libc::recvmmsg(
+            sock_fd,
+            &mut hdrs[0],
+            count as u32,
+            MSG_WAITFORONE.try_into().unwrap(),
+            &mut ts,
+        )
+    };
     let nrecv = if nrecv < 0 {
         return Err(io::Error::last_os_error());
     } else {