Remove unnecessary null pointer checks.

asio/include/asio/detail/impl/winrt_ssocket_service_base.ipp

@@ -138,13 +138,9 @@ void winrt_ssocket_service_base::destroy(
 asio::error_code winrt_ssocket_service_base::close(
     winrt_ssocket_service_base::base_implementation_type& impl,
     asio::error_code& ec)
-{
-  if (impl.socket_)
 {
   delete impl.socket_;
   impl.socket_ = nullptr;
-  }
-
   ec = asio::error_code();
   return ec;
 }

asio/include/asio/detail/thread_info_base.hpp

@@ -52,7 +52,6 @@ public:
   ~thread_info_base()
   {
     for (int i = 0; i < max_mem_index; ++i)
-      if (reusable_memory_[i])
       ::operator delete(reusable_memory_[i]);
   }