Added multiple parameter closure test.

New test has multiple parameters in a closure with longer names in order
to clarify the issues relating to odd spans.

Author: davidtwco

src/test/ui/nll/issue-52534.rs

@@ -14,9 +14,17 @@
 fn foo(_: impl FnOnce(&u32) -> &u32) {
 }
 
+fn baz(_: impl FnOnce(&u32, u32) -> &u32) {
+}
+
 fn bar() {
     let x = 22;
     foo(|a| &x)
 }
 
+fn foobar() {
+    let y = 22;
+    baz(|first, second| &y)
+}
+
 fn main() { }

src/test/ui/nll/issue-52534.stderr

@@ -1,5 +1,5 @@
 error[E0597]: `x` does not live long enough
-  --> $DIR/issue-52534.rs:19:14
+  --> $DIR/issue-52534.rs:22:14
    |
 LL |     foo(|a| &x)
    |           -  ^ `x` would have to be valid for `'0`
@@ -8,6 +8,16 @@ LL |     foo(|a| &x)
 LL | }
    | - ...but `x` is only valid for the duration of the `bar` function, so it is dropped here while still borrowed
 
-error: aborting due to previous error
+error[E0597]: `y` does not live long enough
+  --> $DIR/issue-52534.rs:27:26
+   |
+LL |     baz(|first, second| &y)
+   |               -          ^ `y` would have to be valid for `'0`
+   |               |
+   |               has type `&'0 u32`
+LL | }
+   | - ...but `y` is only valid for the duration of the `foobar` function, so it is dropped here while still borrowed
+
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0597`.