tdelete(3): don't delete the node we are about to return.

CID: 272528 Obtained from: NetBSD (CVS rev. 1.4) MFC after: 2 weeks
2015-02-05 23:02:43 +00:00 · 2015-02-05 23:02:43 +00:00 · b20592de1b
commit b20592de1b
parent 5262b957d4
1 changed files with 2 additions and 1 deletions
--- a/lib/libc/stdlib/tdelete.c
+++ b/lib/libc/stdlib/tdelete.c
@ -65,7 +65,8 @@ tdelete(const void * __restrict vkey, void ** __restrict vrootp,
 			q->rlink = (*rootp)->rlink;
 		}
 	}
-	free(*rootp);				/* D4: Free node */
+	if (p != *rootp)
+		free(*rootp);			/* D4: Free node */
 	*rootp = q;				/* link parent to new node */
 	return p;
 }