Fixed DoublyLinkedList::Iterator().

Switched back to a pointer to the list in the Iterator internally, so
that it can still be just copied without having to overload "=", etc.
This fixes the boot loader build, too (shame on me).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6941 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/util/DoublyLinkedList.h

@@ -69,7 +69,7 @@ class List {
 
 		IteratorType Iterator()
 		{
-			return IteratorType(this);
+			return IteratorType(*this);
 		}
 
 		bool IsEmpty()
@@ -82,7 +82,6 @@ class List {
 			return fLink.next;
 		}
 
-
 		static inline size_t Offset()
 		{
 			return (size_t)&(((Item *)1)->*LinkMember) - 1;
@@ -104,11 +103,11 @@ class Iterator {
 		typedef List<Item, LinkMember> ListType;
 
 		Iterator() : fCurrent(NULL) {}
-		Iterator(ListType &list) : fList(list), fCurrent(list.Head()) {}
+		Iterator(ListType &list) : fList(&list), fCurrent(list.Head()) {}
 
 		Item *Next()
 		{
-			if (fCurrent == &fList.fLink)
+			if (fCurrent == &fList->fLink)
 				return NULL;
 
 			Link *current = fCurrent;
@@ -118,7 +117,7 @@ class Iterator {
 		}
 
 	private:
-		ListType	&fList;
+		ListType	*fList;
 		Link		*fCurrent;
 };