bless output of ui test impl-trait/multiple-lifetimes/error-handling.rs

Some impl Trait fixes lead to locating more accurately the cause of
a universal region error with a user annotation

Author: lqd

src/test/ui/impl-trait/multiple-lifetimes/error-handling.polonius.stderr

@@ -1,10 +1,13 @@
 error: lifetime may not live long enough
-  --> $DIR/error-handling.rs:13:56
+  --> $DIR/error-handling.rs:23:16
    |
 LL | fn foo<'a, 'b, 'c>(x: &'static i32, mut y: &'a i32) -> E<'b, 'c> {
-   |        --  -- lifetime `'b` defined here               ^^^^^^^^^ opaque type requires that `'a` must outlive `'b`
+   |        --  -- lifetime `'b` defined here
    |        |
    |        lifetime `'a` defined here
+...
+LL |         let _: &'b i32 = *u.0;
+   |                ^^^^^^^ type annotation requires that `'a` must outlive `'b`
    |
    = help: consider adding the following bound: `'a: 'b`