[PATCH] transport-helper.c: fix check for size_t < 0

[Nicolas Kaiser <nikai@nikai.net>]

'bytes' is unsigned of type size_t, and can't be negative.
But the assigned write() returns ssize_t, and -1 on error.
For testing < 0, 'bytes' needs to be of a signed type.

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
---
Testsuite did not regress at my place.

 transport-helper.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/transport-helper.c b/transport-helper.c
index 4e4754c..710b6f1 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -973,7 +973,7 @@ static int udt_do_read(struct unidirectional_transfer *t)
  */
 static int udt_do_write(struct unidirectional_transfer *t)
 {
-	size_t bytes;
+	int bytes;
 
 	if (t->bufuse == 0)
 		return 0;	/* Nothing to write. */
@@ -989,7 +989,7 @@ static int udt_do_write(struct unidirectional_transfer *t)
 		if (t->bufuse)
 			memmove(t->buf, t->buf + bytes, t->bufuse);
 		transfer_debug("Wrote %i bytes to %s (buffer now at %i)",
-			(int)bytes, t->dest_name, (int)t->bufuse);
+			bytes, t->dest_name, (int)t->bufuse);
 	}
 	return 0;
 }
-- 
1.7.3.4