Remove incorrect never! invocations

Author: Veykril

src/tools/rust-analyzer/crates/hir/src/display.rs

@@ -134,9 +134,9 @@ impl HirDisplay for Function {
                         .as_ref()
                         .unwrap()
                     }
-                    _ => panic!("Async fn ret_type should be impl Future"),
+                    _ => &TypeRef::Error,
                 },
-                _ => panic!("Async fn ret_type should be impl Future"),
+                _ => &TypeRef::Error,
             }
         };
 

src/tools/rust-analyzer/crates/hir/src/lib.rs

@@ -1977,7 +1977,6 @@ impl Function {
                 return Type::new_with_resolver_inner(db, &resolver, output_eq.ty).into();
             }
         }
-        never!("Async fn ret_type should be impl Future");
         None
     }