[network-manager-openconnect] Fix error check for write() failing.

[David Woodhouse <dwmw2 src gnome org>]

commit 64be7353da3f9bb06f4e852d1fe604dea982f673
Author: David Woodhouse <David Woodhouse intel com>
Date:   Mon May 21 15:12:16 2012 +0100

    Fix error check for write() failing.
    
    It's cosmetic, since we're doing nothing anyway and we only did it to shut
    the compiler up. But we ought to get it right.

 auth-dialog/main.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/auth-dialog/main.c b/auth-dialog/main.c
index 31ef7ea..fd14459 100644
--- a/auth-dialog/main.c
+++ b/auth-dialog/main.c
@@ -1207,7 +1207,7 @@ static void dialog_response (GtkDialog *dialog, int response, auth_ui_data *ui_d
 {
 	switch (response) {
 	case AUTH_DIALOG_RESPONSE_CANCEL:
-		if (write(ui_data->cancel_pipes[1], "x", 1)) {
+		if (write(ui_data->cancel_pipes[1], "x", 1) < 0) {
 			/* Pfft. Not a lot we can do about it */
 		}
 		/* Fall through... */