[wasm] No need to use multiple inheritance for `ModuleBytesEnv`

src/wasm/module-decoder.cc

Index: src/wasm/module-decoder.cc
diff --git a/src/wasm/module-decoder.cc b/src/wasm/module-decoder.cc
index d3c08bde527028a6c9ac5a742d0571b05aae2d98..d3feb4c3571b62f673ad90ccefc26ea80b907680 100644
--- a/src/wasm/module-decoder.cc
+++ b/src/wasm/module-decoder.cc
@@ -780,21 +780,22 @@ class ModuleDecoder : public Decoder {
   // Verifies the body (code) of a given function.
   void VerifyFunctionBody(uint32_t func_num, ModuleBytesEnv* menv,
                           WasmFunction* function) {
+    WasmFunctionName func_name(function,
+                               menv->wire_bytes.GetNameOrNull(function));
     if (FLAG_trace_wasm_decoder || FLAG_trace_wasm_decode_time) {
       OFStream os(stdout);
-      os << "Verifying WASM function " << WasmFunctionName(function, menv)
-         << std::endl;
+      os << "Verifying WASM function " << func_name << std::endl;
     }
     FunctionBody body = {function->sig, start_,
                          start_ + function->code_start_offset,
                          start_ + function->code_end_offset};
-    DecodeResult result =
-        VerifyWasmCode(module_zone->allocator(),
-                       menv == nullptr ? nullptr : menv->module, body);
+    DecodeResult result = VerifyWasmCode(
+        module_zone->allocator(),
+        menv == nullptr ? nullptr : menv->module_env.module, body);
     if (result.failed()) {
       // Wrap the error message from the function decoder.
       std::ostringstream str;
-      str << "in function " << WasmFunctionName(function, menv) << ": ";
+      str << "in function " << func_name << ": ";
       str << result;
       std::string strval = str.str();
       const char* raw = strval.c_str();