Update compiler/rustc_borrowck/src/region_infer/mod.rs

Co-authored-by: lcnr <[email protected]>

Author: amandasystems

compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -1796,13 +1796,14 @@ impl<'tcx> RegionInferenceContext<'tcx> {
 
         // If we are passing through a constraint added because `'lt: 'unnameable`,
         // where cannot name `'unnameable`, redirect search towards `'unnameable`.
-        let path = if let Some((lt, unnameable)) = path.iter().find_map(|c| {
+        let due_to_placeholder_outlives = path.iter().find_map(|c| {
             if let ConstraintCategory::OutlivesUnnameablePlaceholder(lt, unnameable) = c.category {
                 Some((lt, unnameable))
             } else {
                 None
             }
-        }) {
+        });
+        let path = if let Some((lt, unnameable)) = due_to_placeholder_outlives {
             // This the `false` argument is what prevents circular reasoning here!
             self.constraint_path_to(lt, |r| r == unnameable, false).unwrap().0
         } else {