internal: include missing header (#3464)

src/helpers/WLListener.cpp

@@ -2,6 +2,7 @@
 #include "MiscFunctions.hpp"
 #include <string>
 #include "../debug/Log.hpp"
+#include "Watchdog.hpp"
 
 void handleWrapped(wl_listener* listener, void* data) {
     CHyprWLListener::SWrapper* pWrap = wl_container_of(listener, pWrap, m_sListener);
@@ -56,4 +57,4 @@ void CHyprWLListener::initCallback(wl_signal* pSignal, std::function<void(void*,
 
 void CHyprWLListener::emit(void* data) {
     m_pCallback(m_pOwner, data);
-}
+}