rem: W_EventHandler *ptr, *nptr;
add: W_EventHandler *ptr; WMBagIterator iter;
context: W_CleanUpEvents(WMView *view){    W_EventHandler *ptr, *nptr;        ptr = view->handlerList;            while (ptr!=NULL) {	nptr = ptr->nextHandler;	wfree(ptr);	ptr = nptr;    }}