fix(amodule): prevent crash when cursor timeout fires after destruction

include/AModule.hpp

@@ -57,6 +57,7 @@ class AModule : public IModule {
   bool hasUserEvents_;
   gdouble distance_scrolled_y_;
   gdouble distance_scrolled_x_;
+  sigc::connection cursor_timeout_conn_;
   std::map<std::string, std::string> eventActionMap_;
   static const inline std::map<std::pair<uint, GdkEventType>, std::string> eventMap_{
       {std::make_pair(1, GdkEventType::GDK_BUTTON_PRESS), "on-click"},

src/AModule.cpp

@@ -17,7 +17,8 @@ AModule::AModule(const Json::Value& config, const std::string& name, const std::
       isTooltip{config_["tooltip"].isBool() ? config_["tooltip"].asBool() : true},
       isExpand{config_["expand"].isBool() ? config_["expand"].asBool() : false},
       distance_scrolled_y_(0.0),
-      distance_scrolled_x_(0.0) {
+      distance_scrolled_x_(0.0),
+      cursor_timeout_conn_() {
   // Configure module action Map
   const Json::Value actions{config_["actions"]};
 
@@ -83,6 +84,9 @@ AModule::AModule(const Json::Value& config, const std::string& name, const std::
 }
 
 AModule::~AModule() {
+  if (cursor_timeout_conn_.connected()) {
+    cursor_timeout_conn_.disconnect();
+  }
   for (const auto& pid : pid_children_) {
     if (pid != -1) {
       killpg(pid, SIGTERM);
@@ -118,7 +122,7 @@ void AModule::setCursor(Gdk::CursorType const& c) {
   } else {
     // window may not be accessible yet, in this case,
     // schedule another call for setting the cursor in 1 sec
-    Glib::signal_timeout().connect_seconds(
+    cursor_timeout_conn_ = Glib::signal_timeout().connect_seconds(
         [this, c]() {
           setCursor(c);
           return false;