Consolidate CCS_OK codepaths in s3_srvr.c.

Rename SSL3_ST_SR_POST_CLIENT_CERT to SSL3_ST_SR_CHANGE and have this be the
point at which CCS_OK is set. The copy before ssl3_get_finished is redundant as
we never transition to SR_FINISHED directly.

Change-Id: I3eefeb821e7ae53d52dacc587fdc59de9ea9a667
Reviewed-on: https://boringssl-review.googlesource.com/1297
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/include/openssl/ssl3.h b/include/openssl/ssl3.h
index 3959e59..0023b30 100644
--- a/include/openssl/ssl3.h
+++ b/include/openssl/ssl3.h
@@ -612,13 +612,11 @@
 #define SSL3_ST_SR_KEY_EXCH_B		(0x191|SSL_ST_ACCEPT)
 #define SSL3_ST_SR_CERT_VRFY_A		(0x1A0|SSL_ST_ACCEPT)
 #define SSL3_ST_SR_CERT_VRFY_B		(0x1A1|SSL_ST_ACCEPT)
-#define SSL3_ST_SR_CHANGE_A		(0x1B0|SSL_ST_ACCEPT)
-#define SSL3_ST_SR_CHANGE_B		(0x1B1|SSL_ST_ACCEPT)
+#define SSL3_ST_SR_CHANGE		(0x1B0|SSL_ST_ACCEPT)
 #ifndef OPENSSL_NO_NEXTPROTONEG
 #define SSL3_ST_SR_NEXT_PROTO_A		(0x210|SSL_ST_ACCEPT)
 #define SSL3_ST_SR_NEXT_PROTO_B		(0x211|SSL_ST_ACCEPT)
 #endif
-#define SSL3_ST_SR_POST_CLIENT_CERT	(0x1BF|SSL_ST_ACCEPT)
 #define SSL3_ST_SR_CHANNEL_ID_A		(0x230|SSL_ST_ACCEPT)
 #define SSL3_ST_SR_CHANNEL_ID_B		(0x231|SSL_ST_ACCEPT)
 #define SSL3_ST_SR_FINISHED_A		(0x1C0|SSL_ST_ACCEPT)