Fix haggis_mq_pop function to return the EndOfArchive message while

leaving it in place for the next thread. Previously it was returning
'NULL' upon encountering this message type.

mq.c

@@ -79,7 +79,7 @@ haggis_msg* haggis_mq_pop(haggis_mq *queue) {
     queue->count--;
     msg = queue->head;
     if (msg->tag == EndOfArchive)
-        return NULL;
+        return msg;
     if (queue->tail == queue->head) {
         queue->tail = queue->head = NULL;
     } else {

test/Makefile

@@ -70,7 +70,7 @@ tests      += create_symlink_node
 tests      += create_fifo_node
 tests      += create_dev_node
 tests      += create_file_node
-tests      += haggis_mq_push_pop
+tests      += mq_push_pop
 
 total      != echo $(tests) | wc -w | awk '{ print $$1 }'
 

test/mq_push_pop.c

@@ -44,7 +44,8 @@ int main() {
     assert(memcmp(m3->body.f_name, "/bin/cat", 8) == 0);
     free(m3);
 
-    /*m4 = haggis_mq_pop(&mq);
+    m4 = haggis_mq_pop(&mq);
     assert(m4->tag == EndOfArchive);
-    assert(mq.head != NULL);*/
+    assert(mq.head != NULL);
+    free(m4);
 }