SSL: fixed ngx_ssl_recv() to reset c->read->ready after errors. With this change, behaviour of ngx_ssl_recv() now matches ngx_unix_recv(), which used to always reset c->read->ready to 0 when returning errors. This fixes an infinite loop in unbuffered SSL proxying if writing to the client is blocked and an SSL error happens (ticket #2418). With this change, the fix for a similar issue in the stream module (6868:ee3645078759), which used a different approach of explicitly testing c->read->error instead, is no longer needed and was reverted.

--- a/src/stream/ngx_stream_proxy_module.c
+++ b/src/stream/ngx_stream_proxy_module.c
@@ -1675,9 +1675,8 @@ ngx_stream_proxy_process(ngx_stream_sess
 
         size = b->end - b->last;
 
-        if (size && src->read->ready && !src->read->delayed
-            && !src->read->error)
-        {
+        if (size && src->read->ready && !src->read->delayed) {
+
             if (limit_rate) {
                 limit = (off_t) limit_rate * (ngx_time() - u->start_sec + 1)
                         - *received;