wasm: fix --trace_wasm_decoder flag

src/wasm/encoder.cc

 // Copyright 2015 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.
 
 #include "src/signature.h"
 
 #include "src/handles.h"
 #include "src/v8.h"
 #include "src/zone-containers.h"
 
 #include "src/wasm/ast-decoder.h"
 #include "src/wasm/encoder.h"
 #include "src/wasm/wasm-macro-gen.h"
 #include "src/wasm/wasm-module.h"
 #include "src/wasm/wasm-opcodes.h"
 
 #include "src/v8memory.h"
 
 #if DEBUG
 #define TRACE(...)                                    \
   do {                                                \
-    if (FLAG_trace_wasm_decoder) PrintF(__VA_ARGS__); \
+    if (FLAG_trace_wasm_encoder) PrintF(__VA_ARGS__); \
   } while (false)
 #else
 #define TRACE(...)
 #endif
 
 namespace v8 {
 namespace internal {
 namespace wasm {
 
 /*TODO: add error cases for adding too many locals, too many functions and bad
@@ skipping 697 matching lines @@
       next = next | 0x80;
     }
     output.push_back(next);
     shift += 7;
   } while ((next & 0x80) != 0);
   return output;
 }
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8