core: free more memory on destruction (#6348)

* pointermgr: add destructor to state and free buf

if the pointer has a buffer set it wont be freed upon destruction, make
asan more happy by adding a destructor and wlr_buf_unlock it on exit.

* cursormgr: free the animation timer event source

properly free the animation timer event source on destruction.

* compositor: free the critsig event source on exit

properly free the critical signal event source on exit.

* popup: clang format style

clang format.

src/managers/CursorManager.cpp

@@ -58,6 +58,9 @@ CCursorManager::CCursorManager() {
 CCursorManager::~CCursorManager() {
     if (m_pWLRXCursorMgr)
         wlr_xcursor_manager_destroy(m_pWLRXCursorMgr);
+
+    if (m_pAnimationTimer)
+        wl_event_source_remove(m_pAnimationTimer);
 }
 
 void CCursorManager::dropBufferRef(CCursorManager::CCursorBuffer* ref) {