zeroconf/Glue: move code to the ZeroconfHelper constructor

src/zeroconf/Glue.cxx

@@ -84,13 +84,5 @@ ZeroconfInit(const ConfigData &config, [[maybe_unused]] EventLoop &loop)
 		}
 	}
 
-#ifdef HAVE_AVAHI
-	return std::make_unique<ZeroconfHelper>(AvahiInit(loop, serviceName,
-							  listen_port));
-#endif
-
-#ifdef HAVE_BONJOUR
-	return std::make_unique<ZeroconfHelper>(BonjourInit(loop, serviceName,
-							    listen_port));
-#endif
+	return std::make_unique<ZeroconfHelper>(loop, serviceName, listen_port);
 }

src/zeroconf/Helper.cxx

@@ -21,10 +21,16 @@
 
 #ifdef HAVE_AVAHI
 #include "avahi/Helper.hxx"
+#define CreateHelper AvahiInit
 #endif
 
 #ifdef HAVE_BONJOUR
 #include "Bonjour.hxx"
+#define CreateHelper BonjourInit
 #endif
 
+ZeroconfHelper::ZeroconfHelper(EventLoop &event_loop, const char *name,
+			       unsigned port)
+	:helper(CreateHelper(event_loop, name, port)) {}
+
 ZeroconfHelper::~ZeroconfHelper() noexcept = default;

src/zeroconf/Helper.hxx

@@ -24,6 +24,7 @@
 
 #include <memory>
 
+class EventLoop;
 class AvahiHelper;
 class BonjourHelper;
 
@@ -37,9 +38,8 @@ class ZeroconfHelper final {
 #endif
 
 public:
-	template<typename T>
-	ZeroconfHelper(T &&_helper) noexcept
-		:helper(std::forward<T>(_helper)) {}
+	ZeroconfHelper(EventLoop &event_loop, const char *name,
+		       unsigned port);
 
 	~ZeroconfHelper() noexcept;
 };