[Interpreter] Avoid accessing on-heap literal in VisitLiteral.

test/cctest/interpreter/test-bytecode-generator.cc

Index: test/cctest/interpreter/test-bytecode-generator.cc
diff --git a/test/cctest/interpreter/test-bytecode-generator.cc b/test/cctest/interpreter/test-bytecode-generator.cc
index 401ea1411ba52ccde08cd33ca18ea16db4df4b2d..3d2c3608636e98c3eaedf6cf4e9f1442427c5760 100644
--- a/test/cctest/interpreter/test-bytecode-generator.cc
+++ b/test/cctest/interpreter/test-bytecode-generator.cc
@@ -177,6 +177,8 @@ TEST(PrimitiveReturnStatements) {
       "return +127;\n",
 
       "return -128;\n",
+
+      "return 2.0;\n",
   };
 
   CHECK(CompareTexts(BuildActual(printer, snippets),