[wasm] Fix and tighten memory validation

test/mjsunit/wasm/trap-location-with-trap-if.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 --trap-if
 
 load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 // Collect the Callsite objects instead of just a string:
 Error.prepareStackTrace = function(error, frames) {
   return frames;
 };
 
 var builder = new WasmModuleBuilder();
 
+builder.addMemory(0, 1, false);
+
 var sig_index = builder.addType(kSig_i_v)
 
 // Build a function to resemble this code:
 //   if (idx < 2) {
 //     return load(-2 / idx);
 //   } else if (idx == 2) {
 //     unreachable;
 //   } else {
 //     return call_indirect(idx);
 //   }
@@ skipping 43 matching lines @@
     assertEquals(0, e.stack[0].getLineNumber(), "wasmFunctionIndex");
     assertEquals(position, e.stack[0].getPosition(), "position");
   }
 }
 
 // The actual tests:
 testWasmTrap(0, kTrapDivByZero,      14);
 testWasmTrap(1, kTrapMemOutOfBounds, 15);
 testWasmTrap(2, kTrapUnreachable,    28);
 testWasmTrap(3, kTrapFuncInvalid,    32);