Simplify usage of UnsafeMessage::send

Author: bjorn3

src/driver/jit.rs

@@ -46,7 +46,7 @@ unsafe impl Send for UnsafeMessage {}
 
 impl UnsafeMessage {
     /// Send the message.
-    fn send(self) -> Result<(), mpsc::SendError<UnsafeMessage>> {
+    fn send(self) {
         thread_local! {
             /// The Sender owned by the local thread
             static LOCAL_MESSAGE_SENDER: mpsc::Sender<UnsafeMessage> =
@@ -55,7 +55,9 @@ impl UnsafeMessage {
                     .lock().unwrap()
                     .clone();
         }
-        LOCAL_MESSAGE_SENDER.with(|sender| sender.send(self))
+        LOCAL_MESSAGE_SENDER.with(|sender| {
+            sender.send(self).expect("rustc thread hung up before lazy JIT request was sent")
+        })
     }
 }
 
@@ -231,9 +233,7 @@ extern "C" fn clif_jit_fn(
 ) -> *const u8 {
     // send the JIT request to the rustc thread, with a channel for the response
     let (tx, rx) = mpsc::channel();
-    UnsafeMessage::JitFn { instance_ptr, trampoline_ptr, tx }
-        .send()
-        .expect("rustc thread hung up before lazy JIT request was sent");
+    UnsafeMessage::JitFn { instance_ptr, trampoline_ptr, tx }.send();
 
     // block on JIT compilation result
     rx.recv().expect("rustc thread hung up before responding to sent lazy JIT request")