Fix do_write

After about four month, we never noticed this rather obvious bug.  Tells
you something about the frequency of short writes.

Signed-off-by: Joern Engel <joern@logfs.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/cancd.c b/cancd.c
index c3cb760..4aff4fa 100644
--- a/cancd.c
+++ b/cancd.c
@@ -311,6 +311,7 @@ static int do_write(int fd, const void *buf, size_t count)
 		if (ret < 0)
 			return ret;
 		count -= ret;
+		buf += ret;
 	} while (count);
 	return 0;
 }