htc: implement htclow listener thread

libraries/libstratosphere/source/htclow/mux/htclow_mux_send_buffer.cpp

@@ -15,6 +15,7 @@
  */
 #include <stratosphere.hpp>
 #include "htclow_mux_channel_impl.hpp"
+#include "../htclow_packet_factory.hpp"
 
 namespace ams::htclow::mux {
 
@@ -23,4 +24,12 @@ namespace ams::htclow::mux {
         m_version = version;
     }
 
+    void SendBuffer::Clear() {
+        while (!m_packet_list.empty()) {
+            auto *packet = std::addressof(m_packet_list.front());
+            m_packet_list.pop_front();
+            m_packet_factory->Delete(packet);
+        }
+    }
+
 }