[metacity] If writing fails when handling SIGTERM, log an error. Closes #603510.

[Thomas James Alexander Thurman <tthurman src gnome org>]

commit 5389959edc3372fe43caf2230f6922c35c8b04e6
Author: Christian Kirbach <Christian Kirbach googlemail com>
Date:   Sat Jan 15 18:14:31 2011 -0500

    If writing fails when handling SIGTERM, log an error.  Closes #603510.
    
    This fixes a problem that was already separately fixed by Thomas,
    in commit 575f5, but it does it more elegantly.

 src/core/main.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/src/core/main.c b/src/core/main.c
index e7256c9..4f74383 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -377,9 +377,8 @@ sigterm_handler (int signum)
 {
   if (sigterm_pipe_fds[1] >= 0)
     {
-      int dummy;
-
-      dummy = write (sigterm_pipe_fds[1], "", 1);
+      if ( write (sigterm_pipe_fds[1], "", 1) == -1 )
+        g_printerr ("metacity: write to sigterm_pipe failed.\n");
       close (sigterm_pipe_fds[1]);
       sigterm_pipe_fds[1] = -1;
     }