Correct the condition to escape the creation of hydro tasks in the absence of...

Correct the condition to escape the creation of hydro tasks in the absence of feedabck in the make_hydroloop() function.

src/engine_maketasks.c

@@ -2066,7 +2066,7 @@ void engine_make_hydroloop_tasks_mapper(void *map_data, int num_elements,
     struct cell *ci = &cells[cid];
 
     /* Skip cells without hydro or star particles */
-    if ((ci->hydro.count == 0) && (with_feedback && ci->stars.count == 0))
+    if ((ci->hydro.count == 0) && (!with_feedback || ci->stars.count == 0))
       continue;
 
     /* If the cell is local build a self-interaction */
@@ -2096,7 +2096,7 @@ void engine_make_hydroloop_tasks_mapper(void *map_data, int num_elements,
           /* Is that neighbour local and does it have gas or star particles ? */
           if ((cid >= cjd) ||
               ((cj->hydro.count == 0) &&
-               (with_feedback && cj->stars.count == 0)) ||
+               (!with_feedback || cj->stars.count == 0)) ||
               (ci->nodeID != nodeID && cj->nodeID != nodeID))
             continue;