rustc_mir: track inlined callees in SourceScopeData.

compiler/rustc_mir_build/src/build/mod.rs

@@ -334,7 +334,7 @@ struct Builder<'a, 'tcx> {
 
     /// The vector of all scopes that we have created thus far;
     /// we track this for debuginfo later.
-    source_scopes: IndexVec<SourceScope, SourceScopeData>,
+    source_scopes: IndexVec<SourceScope, SourceScopeData<'tcx>>,
     source_scope: SourceScope,
 
     /// The guard-context: each time we build the guard expression for

compiler/rustc_mir_build/src/build/scope.rs

@@ -705,6 +705,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
         self.source_scopes.push(SourceScopeData {
             span,
             parent_scope: Some(parent),
+            inlined: None,
             local_data: ClearCrossCrate::Set(scope_local_data),
         })
     }