Fix fd leaks in mod_cgi (fds not closed on pipe/fork failures, found by Rodrigo, fixes #2158, #2159)

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@2706 152afb58-edef-0310-8abb-c4023f1b3aa9

src/mod_cgi.c

@@ -747,6 +747,8 @@ static int cgi_create_env(server *srv, connection *con, plugin_data *p, buffer *
 	}
 
 	if (pipe(from_cgi_fds)) {
+		close(to_cgi_fds[0]);
+		close(to_cgi_fds[1]);
 		log_error_write(srv, __FILE__, __LINE__, "ss", "pipe failed:", strerror(errno));
 		return -1;
 	}
@@ -1035,6 +1037,10 @@ static int cgi_create_env(server *srv, connection *con, plugin_data *p, buffer *
 	case -1:
 		/* error */
 		log_error_write(srv, __FILE__, __LINE__, "ss", "fork failed:", strerror(errno));
+		close(from_cgi_fds[0]);
+		close(from_cgi_fds[1]);
+		close(to_cgi_fds[0]);
+		close(to_cgi_fds[1]);
 		return -1;
 		break;
 	default: {