From d023e33790c8d026e5e53c9a390ce226a406ca2d Mon Sep 17 00:00:00 2001
From: pancake <pancake@nopcode.org>
Date: Thu, 30 Mar 2017 09:51:45 +0200
Subject: [PATCH] Fix null deref in RCons.swapGround

---
 libr/cons/cons.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libr/cons/cons.c b/libr/cons/cons.c
index 10df943d1c..839bb78694 100755
--- a/libr/cons/cons.c
+++ b/libr/cons/cons.c
@@ -1223,6 +1223,9 @@ R_API char *r_cons_lastline (int *len) {
 
 /* swap color from foreground to background, returned value must be freed */
 R_API char *r_cons_swap_ground(const char *col) {
+	if (!col) {
+		return NULL;
+	}
 	if (!strncmp (col, "\x1b[48;5;", 7)) {
 		/* rgb background */
 		return r_str_newf ("\x1b[38;5;%s", col+7);