Check that constant locals have constant initializers.

sdk/lib/_internal/compiler/implementation/resolution/members.dart

Index: sdk/lib/_internal/compiler/implementation/resolution/members.dart
diff --git a/sdk/lib/_internal/compiler/implementation/resolution/members.dart b/sdk/lib/_internal/compiler/implementation/resolution/members.dart
index 73723474460c678b4201df23a7e66c5a560e262f..3e1ca3876bee5480ed667c19753cc02268d64720 100644
--- a/sdk/lib/_internal/compiler/implementation/resolution/members.dart
+++ b/sdk/lib/_internal/compiler/implementation/resolution/members.dart
@@ -3931,6 +3931,11 @@ class VariableDefinitionsVisitor extends CommonResolverVisitor<SourceString> {
       VariableElement element =
           new VariableElementX(name, variables, kind, link.head);
       resolver.defineElement(link.head, element);
+      if (definitions.modifiers.isConst()) {
+        compiler.enqueuer.resolution.addPostProcessAction(element, () {
+          compiler.constantHandler.compileVariable(element, isConst: true);
+        });
+      }
     }
   }
 }