Add another case to the syntax fixup code

crates/hir_expand/src/fixup.rs

@@ -97,6 +97,18 @@ pub(crate) fn fixup_syntax(node: &SyntaxNode) -> SyntaxFixups {
                         ]);
                     }
                 },
+                ast::LetStmt(it) => {
+                    if it.semicolon_token().is_none() {
+                        append.insert(node.clone(), vec![
+                            SyntheticToken {
+                                kind: SyntaxKind::SEMICOLON,
+                                text: ";".into(),
+                                range: end_range,
+                                id: EMPTY_ID,
+                            },
+                        ]);
+                    }
+                },
                 _ => (),
             }
         }
@@ -229,6 +241,34 @@ fn foo () {a . __ra_fixup ; bar () ;}
         )
     }
 
+    #[test]
+    fn incomplete_let() {
+        check(
+            r#"
+fn foo() {
+    let x = a
+}
+"#,
+            expect![[r#"
+fn foo () {let x = a ;}
+"#]],
+        )
+    }
+
+    #[test]
+    fn incomplete_field_expr_in_let() {
+        check(
+            r#"
+fn foo() {
+    let x = a.
+}
+"#,
+            expect![[r#"
+fn foo () {let x = a . __ra_fixup ;}
+"#]],
+        )
+    }
+
     #[test]
     fn field_expr_before_call() {
         // another case that easily happens while typing