[gtk+] Make Broadway work on freebsd

[Matthias Clasen <matthiasc src gnome org>]

commit 811d602842ac48e3435a5ba92824a4f3c35551a0
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 18 15:15:37 2015 -0500

    Make Broadway work on freebsd
    
    It seems that posix_fallocate gives an ENODEV error when
    called on an fd opened with shm_open on freebsd. Fix up
    the error check to only trigger if we get ENOSPC.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=742980

 gdk/broadway/gdkbroadway-server.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/broadway/gdkbroadway-server.c b/gdk/broadway/gdkbroadway-server.c
index 904eb7e..9033e3e 100644
--- a/gdk/broadway/gdkbroadway-server.c
+++ b/gdk/broadway/gdkbroadway-server.c
@@ -544,13 +544,13 @@ map_named_shm (char *name, gsize size)
 
 #ifdef HAVE_POSIX_FALLOCATE
   res = posix_fallocate (fd, 0, size);
-  if (res != 0)
+  if (res != 0 && errno == ENOSPC)
     {
       shm_unlink (name);
       g_error ("Not enough shared memory for window surface");
     }
 #endif
-  
+
   ptr = mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
 
   (void) close(fd);