Compare tuple element & arg types before suggesting a tuple

src/test/ui/suggestions/args-instead-of-tuple-errors.rs

@@ -0,0 +1,13 @@
+// Ensure we don't suggest tuple-wrapping when we'd end up with a type error
+
+fn main() {
+    // we shouldn't suggest to fix these - `2` isn't a `bool`
+
+    let _: Option<(i32, bool)> = Some(1, 2);
+    //~^ ERROR this enum variant takes 1 argument but 2 arguments were supplied
+    int_bool(1, 2);
+    //~^ ERROR this function takes 1 argument but 2 arguments were supplied
+}
+
+fn int_bool(_: (i32, bool)) {
+}