Initialize padding bits to 0 in ErrorConnMax()

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Daniel Stone <daniel@fooishbar.org>

os/connection.c

@@ -892,7 +892,7 @@ ErrorConnMax(XtransConnInfo trans_conn)
 {
     int fd = _XSERVTransGetConnectionNumber(trans_conn);
     xConnSetupPrefix csp;
-    char pad[3];
+    char pad[3] = { 0, 0, 0 };
     struct iovec iov[3];
     char byteOrder = 0;
     int whichbyte = 1;