Fix extra non_snake_case warning for shorthand field bindings

src/test/ui/lint/issue-89469.rs

@@ -0,0 +1,20 @@
+// Regression test for #89469, where an extra non_snake_case warning was
+// reported for a shorthand field binding.
+
+// check-pass
+#![deny(non_snake_case)]
+
+#[allow(non_snake_case)]
+struct Entry {
+    A: u16,
+    a: u16
+}
+
+fn foo() -> Entry {todo!()}
+
+pub fn f() {
+    let Entry { A, a } = foo();
+    let _ = (A, a);
+}
+
+fn main() {}