task dep graph: remove none when subtype is none

src/scheduler.c

@@ -143,10 +143,26 @@ void scheduler_write_dependency(struct scheduler *s) {
       tb = ta->unlock_tasks[j];
 
       char tmp[200];     /* text to write */
+      char ta_name[200];
+      char tb_name[200];
       /* construct line */
-      sprintf(tmp, "\t \"%s %s\"->\"%s %s\";\n", taskID_names[ta->type],
-              subtaskID_names[ta->subtype], taskID_names[tb->type],
-              subtaskID_names[tb->subtype]);
+      if (ta->subtype == task_subtype_none)
+	sprintf(ta_name, "%s", taskID_names[ta->type]);
+      else
+	sprintf(ta_name, "\"%s %s\"",
+		taskID_names[ta->type],
+		subtaskID_names[ta->subtype]);
+
+      if (tb->subtype == task_subtype_none)
+	sprintf(tb_name, "%s", taskID_names[tb->type]);
+      else
+	sprintf(tb_name, "\"%s %s\"",
+		taskID_names[tb->type],
+		subtaskID_names[tb->subtype]);
+      
+      sprintf(tmp, "\t %s->%s;\n",
+	      ta_name,
+	      tb_name);
 
       /* check if dependency already written */
       int test = 1;