selinux: do not discard const qualifier in cast

Do not discard the const qualifier on the cast from const void* to
__be32*; the addressed value is not modified.

Reported by clang [-Wcast-qual]

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

security/selinux/netnode.c

@@ -107,7 +107,7 @@ static struct sel_netnode *sel_netnode_find(const void *addr, u16 family)
 
 	switch (family) {
 	case PF_INET:
-		idx = sel_netnode_hashfn_ipv4(*(__be32 *)addr);
+		idx = sel_netnode_hashfn_ipv4(*(const __be32 *)addr);
 		break;
 	case PF_INET6:
 		idx = sel_netnode_hashfn_ipv6(addr);
@@ -121,7 +121,7 @@ static struct sel_netnode *sel_netnode_find(const void *addr, u16 family)
 		if (node->nsec.family == family)
 			switch (family) {
 			case PF_INET:
-				if (node->nsec.addr.ipv4 == *(__be32 *)addr)
+				if (node->nsec.addr.ipv4 == *(const __be32 *)addr)
 					return node;
 				break;
 			case PF_INET6: