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-rw-r--r--process.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/process.c b/process.c
index f51e643..56b7aaf 100644
--- a/process.c
+++ b/process.c
@@ -401,8 +401,8 @@ static int cvthexkey ( /* turn hex key string into octets */
len++;
}
- /* if odd then there was an error */
- if ((len & 1) == 1) return -1;
+ /* if 0 or odd, then there was an error */
+ if (len == 0 || (len & 1) == 1) return -1;
/* now we know that the input is good */