Avoid null pointer dereference in reencode().

Returning "*txt" if "txt" is a null pointer is a bad thing. Spotted with
clang-analyzer.

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/parsing.c b/parsing.c
index c9e4350..151c0fe 100644
--- a/parsing.c
+++ b/parsing.c
@@ -103,7 +103,10 @@ const char *reencode(char **txt, const char *src_enc, const char *dst_enc)
 {
         char *tmp;
 
-        if (!txt || !*txt || !src_enc || !dst_enc)
+        if (!txt)
+                return NULL;
+
+        if (!*txt || !src_enc || !dst_enc)
                 return *txt;
 
         /* no encoding needed if src_enc equals dst_enc */