pass primitive data type argument from host to target

Change-Id: I237215e3cc3f4a0bf0f397e4fb3ad1f37e59931c
diff --git a/sysfuzzer/vtscompiler/code_gen/CodeGenBase.cpp b/sysfuzzer/vtscompiler/code_gen/CodeGenBase.cpp
index b6c3373..98821fc 100644
--- a/sysfuzzer/vtscompiler/code_gen/CodeGenBase.cpp
+++ b/sysfuzzer/vtscompiler/code_gen/CodeGenBase.cpp
@@ -92,7 +92,7 @@
 
   h_ss << ") { }" << endl;
   h_ss << " protected:" << endl;
-  h_ss << "  bool Fuzz(const FunctionSpecificationMessage& func_msg," << endl;
+  h_ss << "  bool Fuzz(FunctionSpecificationMessage& func_msg," << endl;
   h_ss << "            void** result);" << endl;
   if (message.component_class() == HAL_SUBMODULE) {
     h_ss << "  void SetSubModule(" << component_name << "* submodule) {" << endl;