Cut deducible template arg in DefaultKeepAliveExecutor init

Summary: [Folly] Cut deducible template arg in `DefaultKeepAliveExecutor` init - let it be deduced instead.

Reviewed By: andriigrynenko

Differential Revision: D14236171

fbshipit-source-id: 2de043efe541c13c59764715516b08d77efcb99b

folly/DefaultKeepAliveExecutor.h

@@ -143,8 +143,7 @@ class DefaultKeepAliveExecutor : public virtual Executor {
 
   std::shared_ptr<ControlBlock> controlBlock_{std::make_shared<ControlBlock>()};
   Baton<> keepAliveReleaseBaton_;
-  KeepAlive<DefaultKeepAliveExecutor> keepAlive_{
-      makeKeepAlive<DefaultKeepAliveExecutor>(this)};
+  KeepAlive<DefaultKeepAliveExecutor> keepAlive_{makeKeepAlive(this)};
 };
 
 } // namespace folly