))     calledFun();   else     calledFun(); // no-warning      if (!0) // expected-note {{silence by adding parentheses to mark code as explicitly dead}}     calledFun(); // expected-warning {{code will never be executed}}   else     calledFun();      if ((!0))     calledFun(); // no-warning   else     calledFun();      if (!(0))     calledFun(); // no-warning   else     calledFun(); }  void t