From: Rafael Zalamena <rzalamena@gmail.com>
Date: Fri, 16 Jun 2017 14:08:43 +0000 (-0300)
Subject: lib: fix a possible NULL deference
X-Git-Tag: reindent-master-before~62^2~4
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=8f942af90;p=mirror%2Ffrr.git

lib: fix a possible NULL deference

Silences a warning generated by clang.
---

diff --git a/lib/openbsd-tree.c b/lib/openbsd-tree.c
index 37762abc1f..9f17f2946a 100644
--- a/lib/openbsd-tree.c
+++ b/lib/openbsd-tree.c
@@ -222,6 +222,10 @@ rbe_remove_color(const struct rb_type *t, struct rb_tree *rbt,
 {
 	struct rb_entry *tmp;
 
+	/* Silence clang possible NULL deference warning. */
+	if (parent == NULL)
+		return;
+
 	while ((rbe == NULL || RBE_COLOR(rbe) == RB_BLACK) &&
 	    rbe != RBH_ROOT(rbt)) {
 		if (RBE_LEFT(parent) == rbe) {