Remove a/b parameters to send_change_cipher_spec.

They're not necessary.

Change-Id: Ifeb3fae73a8b22f88019e6ef9f9ba5e64ed3cfab
Reviewed-on: https://boringssl-review.googlesource.com/8543
Reviewed-by: David Benjamin <davidben@google.com>
diff --git a/ssl/handshake_server.c b/ssl/handshake_server.c
index 0356735..da13135 100644
--- a/ssl/handshake_server.c
+++ b/ssl/handshake_server.c
@@ -447,13 +447,11 @@
         } else {
           skip = 1;
         }
-        ssl->state = SSL3_ST_SW_CHANGE_A;
+        ssl->state = SSL3_ST_SW_CHANGE;
         break;
 
-      case SSL3_ST_SW_CHANGE_A:
-      case SSL3_ST_SW_CHANGE_B:
-        ret = ssl->method->send_change_cipher_spec(ssl, SSL3_ST_SW_CHANGE_A,
-                                                   SSL3_ST_SW_CHANGE_B);
+      case SSL3_ST_SW_CHANGE:
+        ret = ssl->method->send_change_cipher_spec(ssl);
         if (ret <= 0) {
           goto end;
         }