openssl: silence annoying error messages for errno==0 (fixes #2213)

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@2749 152afb58-edef-0310-8abb-c4023f1b3aa9

NEWS

@@ -24,6 +24,7 @@ NEWS
   * mod_status: Add version to status page (fixes #2219)
   * mod_accesslog: optimize accesslog_append_escaped (fixes #2236, thx crypt)
   * autotools: don't recreate parser files with lemon after lemon rebuild
+  * openssl: silence annoying error messages for errno==0 (fixes #2213)
 
 - 1.4.26 - 2010-02-07
   * Fix request parser to handle packets with splitted \r\n\r\n (fixes #2105)

src/connections.c

@@ -1707,7 +1707,7 @@ int connection_state_machine(server *srv, connection *con) {
 										ssl_r, ret,
 										ERR_error_string(err, NULL));
 							} while((err = ERR_get_error()));
-						} else {
+						} else if (errno != 0) { /* ssl bug (see lighttpd ticket #2213): sometimes errno == 0 */
 							log_error_write(srv, __FILE__, __LINE__, "sddds", "SSL (error):",
 									ssl_r, ret, errno,
 									strerror(errno));