[PATCH] gdhcp: nul-terminate return for 0 sized option value

From: Jonah Petri <[email protected]>

In the field I have seen some dhcp servers return a code 252 response
with a zero length.  In this case, this code has len=0 < optlen=1, in
which case the returned string never gets terminated.  Using g_malloc0
causes it to always get zero-terminated.
---
 gdhcp/client.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdhcp/client.c b/gdhcp/client.c
index c9234a18..db8e0596 100644
--- a/gdhcp/client.c
+++ b/gdhcp/client.c
@@ -1865,7 +1865,7 @@ static char *malloc_option_value_string(uint8_t *option, GDHCPOptionType type)
 			((unsigned)len / (unsigned)optlen);
 	if (upper_length == 0)
 		return NULL;
-	dest = ret = g_malloc(upper_length + 1);
+	dest = ret = g_malloc0(upper_length + 1);
 	if (!ret)
 		return NULL;
 
-- 
2.34.1