[ObjC] Fix an assertion failure in EvaluateLValue

Look through parentheses when determining whether the expression is a
@selector expression.

clang/lib/AST/ExprConstant.cpp

@@ -8228,7 +8228,7 @@ static bool EvaluateLValue(const Expr *E, LValue &Result, EvalInfo &Info,
                            bool InvalidBaseOK) {
   assert(!E->isValueDependent());
   assert(E->isGLValue() || E->getType()->isFunctionType() ||
-         E->getType()->isVoidType() || isa<ObjCSelectorExpr>(E));
+         E->getType()->isVoidType() || isa<ObjCSelectorExpr>(E->IgnoreParens()));
   return LValueExprEvaluator(Info, Result, InvalidBaseOK).Visit(E);
 }
 

clang/test/SemaObjCXX/sel-address.mm

@@ -15,5 +15,6 @@ void h() {
 
   // Shouldn't crash.
   g(&@selector(foo));
+  g(&(@selector(foo)));
 }