fix typo in set_recv_slot

Signed-off-by: Alwin Joshy <[email protected]>

crates/sel4/src/ipc_buffer.rs

@@ -66,6 +66,6 @@ impl IpcBuffer {
         let inner = self.inner_mut();
         inner.receiveCNode = slot.root().bits();
         inner.receiveIndex = slot.path().bits();
-        inner.receiveCNode = slot.path().depth().try_into().unwrap();
+        inner.receiveDepth = slot.path().depth().try_into().unwrap();
     }
 }