[wasm] Make sure the interpreter only executes preprocessed code.

src/wasm/wasm-interpreter.cc

Index: src/wasm/wasm-interpreter.cc
diff --git a/src/wasm/wasm-interpreter.cc b/src/wasm/wasm-interpreter.cc
index 164da8dfe509939b4e3716797b09e79342614375..2db5e8cd92d3b1ccafa38bbd29d93c493d0f4870 100644
--- a/src/wasm/wasm-interpreter.cc
+++ b/src/wasm/wasm-interpreter.cc
@@ -941,7 +941,7 @@ class CodeMap {
     if (function->func_index < interpreter_code_.size()) {
       InterpreterCode* code = &interpreter_code_[function->func_index];
       DCHECK_EQ(function, code->function);
-      return code;
+      return Preprocess(code);
     }
     return nullptr;
   }