Fix flush split fallback

Author: bukka

sapi/fpm/fpm/fpm_stdio.c

@@ -177,6 +177,8 @@ static void fpm_stdio_child_said(struct fpm_event_s *ev, short which, void *arg)
 			if 	(!memcmp(buf, &FPM_STDIO_CMD_FLUSH[cmd_pos], sizeof(FPM_STDIO_CMD_FLUSH) - cmd_pos)) {
 				zlog_stream_finish(log_stream);
 				start = cmd_pos;
+			} else {
+				zlog_stream_str(log_stream, &FPM_STDIO_CMD_FLUSH[0], cmd_pos);
 			}
 			cmd_pos = 0;
 		}

sapi/fpm/tests/log-bwp-msg-flush-split-fallback.phpt

@@ -32,8 +32,7 @@ $tester->expectLogStartNotices();
 $tester->request()->expectEmptyBody();
 $tester->terminate();
 $lines = $tester->getLogLines(2);
-//var_dump($lines);
-var_dump($lines[0] === str_repeat('a', 1022)  . "\0f\n");
+var_dump($lines[0] === str_repeat('a', 1021)  . "\0f\n");
 var_dump($lines[1] === "abc\n");
 $tester->close();
 
@@ -48,5 +47,3 @@ Done
 require_once "tester.inc";
 FPM\Tester::clean();
 ?>
---XFAIL--
-Zero byte is not working in the split for some reason