refactor

src/mpdclient.cpp

@@ -27,14 +27,14 @@ void CMpdClient::Process()
     {
       if (!OpenSocket())
       {
-        m_currentsong.clear();
+        ClearCurrentSong();
         continue;
       }
     }
 
     if (!GetCurrentSong())
     {
-      m_currentsong.clear();
+      ClearCurrentSong();
       m_socket.Close();
     }
 
@@ -120,6 +120,16 @@ bool CMpdClient::GetCurrentSong()
   return false;
 }
 
+void CMpdClient::ClearCurrentSong()
+{
+  CLock lock(m_condition);
+  if (!m_currentsong.empty())
+  {
+    m_currentsong.clear();
+    m_songchanged = true;
+  }
+}
+
 bool CMpdClient::CurrentSong(std::string& song)
 {
   CLock lock(m_condition);

src/mpdclient.h

@@ -20,6 +20,7 @@ class CMpdClient : public CThread
   private:
     bool         OpenSocket();
     bool         GetCurrentSong();
+    void         ClearCurrentSong();
 
     int              m_port;
     std::string      m_address;