Fix assertion in full codegen for holed 'this'.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index f82d506f9ee9538dfebb0605c14771b937c80d12..c97d4319acfc8ac2bf48f5bb4fe270fb516e5189 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -1539,7 +1539,8 @@ void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy) {
         if (var->scope()->DeclarationScope() != scope()->DeclarationScope()) {
           skip_init_check = false;
         } else if (var->is_this()) {
-          CHECK((info_->shared_info()->kind() & kSubclassConstructor) != 0);
+          CHECK(info_->function() != nullptr &&
+                (info_->function()->kind() & kSubclassConstructor) != 0);
           // TODO(dslomov): implement 'this' hole check elimination.
           skip_init_check = false;
         } else {