Use a double-linked list for the linked blocking queue so insertions are done in O(1) time

limelight-common/InputStream.c

@@ -35,7 +35,7 @@ void destroyInputStream(void) {
 	entry = LbqDestroyLinkedBlockingQueue(&packetQueue);
 
 	while (entry != NULL) {
-		nextEntry = entry->next;
+		nextEntry = entry->flink;
 		free(entry->data);
 		free(entry);
 		entry = nextEntry;