Don't exclude @autoclosure from the attribute list when printing override completions

Author: AnthonyLatsis

lib/IDE/CodeCompletion.cpp

@@ -3947,6 +3947,7 @@ class CompletionOverrideLookup : public swift::VisibleDeclConsumer {
         Options.setBaseType(transformType);
       Options.PrintImplicitAttrs = false;
       Options.ExclusiveAttrList.push_back(TAK_escaping);
+      Options.ExclusiveAttrList.push_back(TAK_autoclosure);
       Options.PrintOverrideKeyword = false;
       Options.PrintPropertyAccessors = false;
       Options.PrintStaticKeyword = !hasStaticOrClass;

test/IDE/complete_override.swift

@@ -566,12 +566,13 @@ class Deprecated2 : Deprecated1 {
 
 class EscapingBase {
   func method(_ x: @escaping (@escaping ()->()) -> (()->())) -> (@escaping (@escaping ()->() )->()) { }
+  func autoclosure(arg: @autoclosure () -> Bool) {}
 }
 class Escaping : EscapingBase {
   override func #^ESCAPING_1^#
 }
 // ESCAPING_1: Decl[InstanceMethod]/Super:         method(_ x: @escaping (@escaping () -> ()) -> (() -> ())) -> ((@escaping () -> ()) -> ()) {|};
-
+// ESCAPING_1: Decl[InstanceMethod]/Super:         autoclosure(arg: @autoclosure () -> Bool) {|};
 class OverrideBase {
   static let staticLet = 0
   static var staticVar = 0