[wasm] Inspect right control frames for unreachable flag

test/mjsunit/wasm/globals.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-wasm
 
 load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 function TestImported(type, val, expected) {
   print("TestImported " + type + "(" + val +")" + " = " + expected);
   var builder = new WasmModuleBuilder();
   var sig = makeSig([], [type]);
   var g = builder.addImportedGlobal("uuu", "foo", type);
   builder.addFunction("main", sig)
-    .addBody([kExprGetGlobal, g.index])
+    .addBody([kExprGetGlobal, g])
     .exportAs("main");
   builder.addGlobal(kWasmI32);  // pad
 
   var instance = builder.instantiate({uuu: {foo: val}});
   assertEquals(expected, instance.exports.main());
 }
 
 TestImported(kWasmI32, 300.1, 300);
 TestImported(kWasmF32, 87234.87238, Math.fround(87234.87238));
 TestImported(kWasmF64, 77777.88888, 77777.88888);
@@ skipping 62 matching lines @@
     .addBody([kExprGetGlobal, def.index])
     .exportAs("main");
 
   var instance = builder.instantiate({nnn: {foo: val}});
   assertEquals(val, instance.exports.main());
 }
 
 TestGlobalIndexSpace(kWasmI32, 123);
 TestGlobalIndexSpace(kWasmF32, 54321.125);
 TestGlobalIndexSpace(kWasmF64, 12345.678);