all: fix gcc warnings and lints

src/x11/i3/ipc/connection.cpp

@@ -532,7 +532,7 @@ QString I3IpcEvent::eventToString(EventCode event) {
 	case EventCode::BarStateUpdate: return "bar_state_update"; break;
 	case EventCode::Input: return "input"; break;
 
-	case EventCode::Unknown: return "unknown"; break;
+	default: return "unknown"; break;
 	}
 }
 

src/x11/panel_window.cpp

@@ -115,6 +115,8 @@ XPanelWindow::XPanelWindow(QObject* parent): ProxyWindowBase(parent) {
 				return 0;
 			}
 		}
+
+		return 0;
 	});
 
 	this->bcExclusionEdge.setBinding([this] { return this->bAnchors.value().exclusionEdge(); });