Don't copy NULL (Igor Gnatenko)

diff --git a/src/compress.c b/src/compress.c
index 1988fe78fdc7b4bb5aa6e2745333a6c3afbeca0c..cbcad5e67e4a4f6ab908e7e3a9582263c299d52b 100644 (file)
--- a/src/compress.c
+++ b/src/compress.c
@@ -35,7 +35,7 @@
 #include "file.h"
 
 #ifndef lint
-FILE_RCSID("@(#)$File: compress.c,v 1.97 2016/05/13 23:02:28 christos Exp $")
+FILE_RCSID("@(#)$File: compress.c,v 1.98 2016/06/28 16:38:26 christos Exp $")
 #endif
 
 #include "magic.h"
@@ -517,7 +517,7 @@ uncompresszlib(const unsigned char *old, unsigned char **newch,
 
        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;
 }