Auto merge of #71218 - eddyb:a-lifetime-stranded-in-fn-def, r=nikomatsakis

outlives: ignore lifetimes shallowly found in `ty::FnDef`s.

Fixes #70917 by restoring the pre-#70164 behavior for now.

r? @nikomatsakis

src/test/ui/lifetimes/issue-70917-lifetimes-in-fn-def.rs

@@ -0,0 +1,13 @@
+// check-pass
+
+fn assert_static<T: 'static>(_: T) {}
+
+// NOTE(eddyb) the `'a: 'a` may look a bit strange, but we *really* want
+// `'a` to be an *early-bound* parameter, otherwise it doesn't matter anyway.
+fn capture_lifetime<'a: 'a>() {}
+
+fn test_lifetime<'a>() {
+    assert_static(capture_lifetime::<'a>);
+}
+
+fn main() {}