Auto merge of #32267 - durka:inclusive-range-error, r=nrc

melt the ICE when lowering an impossible range

Emit a fatal error instead of panicking when HIR lowering encounters a range with no `end` point.

This involved adding a method to wire up `LoweringContext::span_fatal`.

Fixes #32245 (cc @nodakai).

r? @nrc

src/librustc/session/mod.rs

@@ -348,6 +348,10 @@ impl NodeIdAssigner for Session {
     fn peek_node_id(&self) -> NodeId {
         self.next_node_id.get().checked_add(1).unwrap()
     }
+
+    fn diagnostic(&self) -> &errors::Handler {
+        self.diagnostic()
+    }
 }
 
 fn split_msg_into_multilines(msg: &str) -> Option<String> {