selinux: sparse fix: fix several warnings in the security server code

Fix several sparse warnings in the SELinux security server code.

Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/selinux/include/avc_ss.h b/security/selinux/include/avc_ss.h
index 4677aa5..d5c3284 100644
--- a/security/selinux/include/avc_ss.h
+++ b/security/selinux/include/avc_ss.h
@@ -18,5 +18,11 @@
 
 extern struct security_class_mapping secclass_map[];
 
+/*
+ * The security server must be initialized before
+ * any labeling or access decisions can be provided.
+ */
+extern int ss_initialized;
+
 #endif /* _SELINUX_AVC_SS_H_ */