[network-manager-openconnect] Fix compiler warnings about ignoring return value from pipe() and write()

[David Woodhouse <dwmw2 src gnome org>]

commit de9f32757689d9e8dbeed2557a39e7e6cf71dc1b
Author: David Woodhouse <David Woodhouse intel com>
Date:   Mon May 21 13:47:38 2012 +0100

    Fix compiler warnings about ignoring return value from pipe() and write()
    
    Not that we can really do much, but we can at least shut the compiler up.

 auth-dialog/main.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)
---
diff --git a/auth-dialog/main.c b/auth-dialog/main.c
index 798c075..31ef7ea 100644
--- a/auth-dialog/main.c
+++ b/auth-dialog/main.c
@@ -1207,7 +1207,9 @@ static void dialog_response (GtkDialog *dialog, int response, auth_ui_data *ui_d
 {
 	switch (response) {
 	case AUTH_DIALOG_RESPONSE_CANCEL:
-		write(ui_data->cancel_pipes[1], "x", 1);
+		if (write(ui_data->cancel_pipes[1], "x", 1)) {
+			/* Pfft. Not a lot we can do about it */
+		}
 		/* Fall through... */
 	case AUTH_DIALOG_RESPONSE_LOGIN:
 		ssl_box_clear(ui_data);
@@ -1404,7 +1406,13 @@ static auth_ui_data *init_ui_data (char *vpn_name, GHashTable *options, GHashTab
 	ui_data->secrets = secrets;
 	ui_data->success_secrets = g_hash_table_new_full (g_str_hash, g_str_equal,
 							  g_free, g_free);
-	pipe(ui_data->cancel_pipes);
+	if (pipe(ui_data->cancel_pipes)) {
+		/* This should never happen, and the world is probably about
+		   to come crashing down around our ears. But attempt to cope
+		   by just disabling the cancellation support... */
+		ui_data->cancel_pipes[0] = -1;
+		ui_data->cancel_pipes[1] = -1;
+	}
 	g_unix_set_fd_nonblocking(ui_data->cancel_pipes[0], TRUE, NULL);
 	g_unix_set_fd_nonblocking(ui_data->cancel_pipes[1], TRUE, NULL);