Only override context read/write funcs on SSL_connect success.

Fixes #1233

Author: michael-grunder

ssl.c

@@ -364,23 +364,26 @@ static int redisSSLConnect(redisContext *c, SSL *ssl) {
         return REDIS_ERR;
     }
 
-    c->funcs = &redisContextSSLFuncs;
     rssl->ssl = ssl;
 
     SSL_set_mode(rssl->ssl, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
     SSL_set_fd(rssl->ssl, c->fd);
     SSL_set_connect_state(rssl->ssl);
 
     ERR_clear_error();
+
     int rv = SSL_connect(rssl->ssl);
     if (rv == 1) {
+        c->funcs = &redisContextSSLFuncs;
         c->privctx = rssl;
         return REDIS_OK;
     }
 
     rv = SSL_get_error(rssl->ssl, rv);
     if (((c->flags & REDIS_BLOCK) == 0) &&
-        (rv == SSL_ERROR_WANT_READ || rv == SSL_ERROR_WANT_WRITE)) {
+        (rv == SSL_ERROR_WANT_READ || rv == SSL_ERROR_WANT_WRITE))
+    {
+        c->funcs = &redisContextSSLFuncs;
         c->privctx = rssl;
         return REDIS_OK;
     }