Fix 'shutdown' regression

We did not update the relibc version needed for redox-rt or generic-rt.
Additionally, base @6b9593946 was missing an updated callsite for
`can_recv()`.

Cargo.lock

@@ -903,7 +903,7 @@ dependencies = [
 [[package]]
 name = "generic-rt"
 version = "0.1.0"
-source = "git+https://gitlab.redox-os.org/redox-os/relibc.git#99e8cd93e0d125010130d8e3aee7d343735d8b5c"
+source = "git+https://gitlab.redox-os.org/redox-os/relibc.git#b17df4daf5e72838d1afb2be83564e527adfe910"
 
 [[package]]
 name = "getrandom"
@@ -1804,7 +1804,7 @@ checksum = "436d45c2b6a5b159d43da708e62b25be3a4a3d5550d654b72216ade4c4bfd717"
 [[package]]
 name = "redox-rt"
 version = "0.1.0"
-source = "git+https://gitlab.redox-os.org/redox-os/relibc.git#99e8cd93e0d125010130d8e3aee7d343735d8b5c"
+source = "git+https://gitlab.redox-os.org/redox-os/relibc.git#b17df4daf5e72838d1afb2be83564e527adfe910"
 dependencies = [
  "bitflags 2.10.0",
  "generic-rt",

netstack/src/scheme/udp.rs

@@ -209,7 +209,7 @@ impl<'a> SchemeSocket for UdpSocket<'a> {
     ) -> SyscallResult<usize> {
         if !file.read_enabled {
             Ok(0)
-        } else if self.can_recv() {
+        } else if self.can_recv(&file.data) {
             let (length, _) = self.recv_slice(buf).expect("Can't receive slice");
             Ok(length)
         } else if file.flags & syscall::O_NONBLOCK == syscall::O_NONBLOCK {