UML - add back accidentally removed error

In the 2.6.20 hang patch, I accidentally threw out an error message. This puts it back.

--

 arch/um/os-Linux/sigio.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Index: linux-2.6.18-mm/arch/um/os-Linux/sigio.c
===================================================================
@@ -334,8 +334,11 @@ void maybe_sigio_broken(int fd, int read
 
 	sigio_lock();
 	err = need_poll(&all_sigio_fds, all_sigio_fds.used + 1);
-	if(err)
+	if(err){
+		printk("maybe_sigio_broken - failed to add pollfd for "
+		       "descriptor %d\n", fd);
 		goto out;
+	}
 
 	all_sigio_fds.poll[all_sigio_fds.used++] =
 		((struct pollfd) { .fd  	= fd,

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