wrapper: Reformat crypto_free()

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>

src/wrapper.c

@@ -146,7 +146,8 @@ struct ssh_crypto_struct *crypto_new(void) {
   return crypto;
 }
 
-void crypto_free(struct ssh_crypto_struct *crypto){
+void crypto_free(struct ssh_crypto_struct *crypto)
+{
     int i;
     if (crypto == NULL) {
         return;
@@ -195,19 +196,15 @@ void crypto_free(struct ssh_crypto_struct *crypto){
     }
     SAFE_FREE(crypto->compress_in_ctx);
 #endif /* WITH_ZLIB */
-  if(crypto->encryptIV)
     SAFE_FREE(crypto->encryptIV);
-  if(crypto->decryptIV)
     SAFE_FREE(crypto->decryptIV);
-  if(crypto->encryptMAC)
     SAFE_FREE(crypto->encryptMAC);
-  if(crypto->decryptMAC)
     SAFE_FREE(crypto->decryptMAC);
-  if(crypto->encryptkey){
+    if (crypto->encryptkey != NULL) {
         memset(crypto->encryptkey, 0, crypto->digest_len);
         SAFE_FREE(crypto->encryptkey);
     }
-  if(crypto->decryptkey){
+    if (crypto->decryptkey != NULL) {
         memset(crypto->decryptkey, 0, crypto->digest_len);
         SAFE_FREE(crypto->decryptkey);
     }