[Sema] Prefer SmallVector over `new`ed memory blocks. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@289571 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaOverload.cpp

@@ -12749,9 +12749,9 @@ Sema::BuildCallToObjectOfClassType(Scope *S, Expr *Obj,
   // Build the full argument list for the method call (the implicit object
   // parameter is placed at the beginning of the list).
-  std::unique_ptr<Expr * []> MethodArgs(new Expr *[Args.size() + 1]);
+  SmallVector<Expr *, 8> MethodArgs(Args.size() + 1);
   MethodArgs[0] = Object.get();
-  std::copy(Args.begin(), Args.end(), &MethodArgs[1]);
+  std::copy(Args.begin(), Args.end(), MethodArgs.begin() + 1);
   // Once we've built TheCall, all of the expressions are properly
   // owned.
@@ -12760,10 +12760,8 @@ Sema::BuildCallToObjectOfClassType(Scope *S, Expr *Obj,
   ResultTy = ResultTy.getNonLValueExprType(Context);
   CXXOperatorCallExpr *TheCall = new (Context)
-      CXXOperatorCallExpr(Context, OO_Call, NewFn.get(),
-                          llvm::makeArrayRef(MethodArgs.get(), Args.size() + 1),
-                          ResultTy, VK, RParenLoc, false);
-  MethodArgs.reset();
+      CXXOperatorCallExpr(Context, OO_Call, NewFn.get(), MethodArgs, ResultTy,
+                          VK, RParenLoc, false);
   if (CheckCallReturnType(Method->getReturnType(), LParenLoc, TheCall, Method))
     return true;