lastfm: put code that takes info from a thread to separate function

src/lastfm.cpp

@@ -64,14 +64,18 @@ std::basic_string<my_char_t> Lastfm::Title()
 void Lastfm::Update()
 {
 	if (isReadyToTake)
+		Take();
+}
+
+void Lastfm::Take()
 {
+	assert(isReadyToTake);
 	pthread_join(itsDownloader, 0);
 	w->Flush();
 	w->Refresh();
 	isDownloadInProgress = 0;
 	isReadyToTake = 0;
 }
-}
 
 void Lastfm::SwitchTo()
 {
@@ -84,8 +88,9 @@ void Lastfm::SwitchTo()
 	if (hasToBeResized)
 		Resize();
 	
-	// if something is ready to take, take it
-	Update();
+	// get an old info if it waits
+	if (isReadyToTake)
+		Take();
 	
 	Load();
 	

src/lastfm.h

@@ -76,6 +76,7 @@ class Lastfm : public Screen<Scrollpad>
 		void Download();
 		static void *DownloadWrapper(void *);
 		
+		void Take();
 		bool isReadyToTake;
 		bool isDownloadInProgress;
 		pthread_t itsDownloader;