security: whitespace coding style fixes

Whitespace coding style fixes.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/keys/key.c b/security/keys/key.c
index e50d264..c70da6f 100644
--- a/security/keys/key.c
+++ b/security/keys/key.c
@@ -355,7 +355,7 @@
  */
 int key_payload_reserve(struct key *key, size_t datalen)
 {
-	int delta = (int) datalen - key->datalen;
+	int delta = (int)datalen - key->datalen;
 	int ret = 0;
 
 	key_check(key);