Fix a potential buffer overrun.

Converting from hex to ascii means the out buffer is 2x + 1 the
inbuffer.

1 files changed, 1 insertions, 1 deletions

diff --git a/hex.c b/hex.c
index e03ddc97..80f0009a 100644
--- a/hex.c
+++ b/hex.c
@@ -54,7 +54,7 @@ const char *gpsd_hexdump(char *scbuf, size_t scbuflen,
     if (NULL == binbuf || 0 == binbuflen)
 	return "";
 
-    for (i = 0; i < len && i * 2 < scbuflen - 2; i++) {
+    for (i = 0; i < len && j < (scbuflen - 3); i++) {
 	scbuf[j++] = hexchar[(ibuf[i] & 0xf0) >> 4];
 	scbuf[j++] = hexchar[ibuf[i] & 0x0f];
     }