More compile fixes.

Signed-off-by: Doug Ledford <dledford@redhat.com>

mdadm-3.1.5-unused-param.patch

@@ -94,3 +94,22 @@
  				cnt++;
  			}
  		}
+--- mdadm-3.1.5/sysfs.c.param	2011-03-26 14:03:54.206714522 -0400
++++ mdadm-3.1.5/sysfs.c	2011-03-26 14:04:37.277821858 -0400
+@@ -422,7 +422,6 @@ int sysfs_set_num(struct mdinfo *sra, st
+ int sysfs_uevent(struct mdinfo *sra, char *event)
+ {
+ 	char fname[50];
+-	int n;
+ 	int fd;
+ 
+ 	sprintf(fname, "/sys/block/%s/uevent",
+@@ -430,7 +429,7 @@ int sysfs_uevent(struct mdinfo *sra, cha
+ 	fd = open(fname, O_WRONLY);
+ 	if (fd < 0)
+ 		return -1;
+-	n = write(fd, event, strlen(event));
++	write(fd, event, strlen(event));
+ 	close(fd);
+ 	return 0;
+ }