Improve terminology around "after typeck"

compiler/rustc_middle/src/ty/context.rs

@@ -211,7 +211,7 @@ pub struct CommonLifetimes<'tcx> {
     /// `ReStatic`
     pub re_static: Region<'tcx>,
 
-    /// Erased region, used after type-checking
+    /// Erased region, used outside of type inference.
     pub re_erased: Region<'tcx>,
 }
 
@@ -351,7 +351,7 @@ pub struct TypeckResults<'tcx> {
     field_indices: ItemLocalMap<usize>,
 
     /// Stores the types for various nodes in the AST. Note that this table
-    /// is not guaranteed to be populated until after typeck. See
+    /// is not guaranteed to be populated outside inference. See
     /// typeck::check::fn_ctxt for details.
     node_types: ItemLocalMap<Ty<'tcx>>,