Assume buffer overflow even if it's not possible.
Found by coverity.

Author: Jan Synacek <jsynacek@redhat.com>

--- sgpio/sgpio.c.orig	2012-11-30 14:14:09.000000000 +0100
+++ sgpio/sgpio.c	2012-11-30 14:14:17.437228466 +0100
@@ -629,7 +629,7 @@
 		return -1;
 	}
 
-	strcpy(location, sys_scsi_path);
+	strncpy(location, sys_scsi_path, FS_PATH_LEN);
 	len = strlen(location);
 
 	for(i=0;i<dir_qan;i++){