[PATCH 17/19 v2] Set padding bytes to 0 in WriteToClient

[Alan Coopersmith]

Clear them out when needed instead of leaving whatever values were
present in previously sent messages.

Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
---

v2: Simplified as suggested by Keith to just use memset instead of a 
Duff-device style switch statement, since most calls won't need this.

 os/io.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/os/io.c b/os/io.c
index b67a5f3..8d0e5cc 100644
--- a/os/io.c
+++ b/os/io.c
@@ -815,7 +815,11 @@ WriteToClient(ClientPtr who, int count, const void *__buf)
     NewOutputPending = TRUE;
     FD_SET(oc->fd, &OutputPending);
     memmove((char *) oco->buf + oco->count, buf, count);
-    oco->count += count + padBytes;
+    oco->count += count;
+    if (padBytes) {
+        memset(oco->buf + oco->count, '\0', padBytes);
+        oco->count += padBytes;
+    }
     return count;
 }
 
-- 
1.7.9.2