Merge branch 'ss/submodule--helper-use-xmalloc'

Code clean-up.

* ss/submodule--helper-use-xmalloc:
  submodule--helper: replace malloc with xmalloc

Author: gitster

builtin/submodule--helper.c

@@ -1160,7 +1160,7 @@ static void submodule_summary_callback(struct diff_queue_struct *q,
 
 		if (!S_ISGITLINK(p->one->mode) && !S_ISGITLINK(p->two->mode))
 			continue;
-		temp = (struct module_cb*)malloc(sizeof(struct module_cb));
+		temp = xmalloc(sizeof(*temp));
 		temp->mod_src = p->one->mode;
 		temp->mod_dst = p->two->mode;
 		temp->oid_src = p->one->oid;