Subject: Don't copy NULL (Igor Gnatenko)
Origin: FILE5_28-9-g1222ebc
Upstream-Author: Christos Zoulas <christos@zoulas.com>
Date: Tue Jun 28 16:38:26 2016 +0000

--- a/src/compress.c
+++ b/src/compress.c
@@ -517,7 +517,7 @@
 
 	return OKDATA;
 err:
-	strlcpy((char *)*newch, z.msg, bytes_max);
+	strlcpy((char *)*newch, z.msg ? z.msg : zError(rc), bytes_max);
 	*n = strlen((char *)*newch);
 	return ERRDATA;
 }