message: fix script context initialization
diff: @@ -409,6 +409,8 @@ int PushScriptContext(API::Types::ObjectID oid, bool valid)
  {
  vm->m_cRunTimeStack.InitializeStack();
  vm->m_cRunTimeStack.m_pVMachine = vm;
  + vm->m_nInstructPtrLevel = 0;
  + vm->m_nInstructionsExecuted = 0;
  }
  vm->m_oidObjectRunScript[vm->m_nRecursionLevel] = oid;
  