reapply filter even if it's the same as the last one applied

src/menu.h

@@ -671,8 +671,6 @@ template <typename T> void NCurses::Menu<T>::PrevFound(bool wrap)
 
 template <typename T> void NCurses::Menu<T>::ApplyFilter(const std::string &filter, size_t beginning, int flags)
 {
-	if (filter == itsFilter)
-		return;
 	itsFound.clear();
 	ClearFiltered();
 	itsFilter = filter;

src/status.cpp

@@ -65,7 +65,12 @@ void StatusbarGetStringHelper(const std::wstring &)
 
 void StatusbarApplyFilterImmediately(const std::wstring &ws)
 {
-	myScreen->ApplyFilter(ToString(ws));
+	static std::wstring cmp;
+	if (cmp != ws)
+	{
+		myScreen->ApplyFilter(ToString(ws));
+		cmp = ws;
+	}
 	myScreen->RefreshWindow();
 	TraceMpdStatus();
 }