Describe the bug

XREADGROUP block longer than timeout.

To reproduce

1. create stream

> XGROUP CREATE stream group $ MKSTREAM

2. client one

> XREADGROUP GROUP group c1 BLOCK 0 STREAMS stream >

3. client two

> XREADGROUP GROUP group c2 BLOCK 10000 STREAMS stream >

4. client three, 5 seconds after step 3. (immediately client one was unblocked and got the message.)

> XADD stream * field value

5. 10 seconds after step 4, client two was unblocked showing that timeout is 15 seconds.

> XREADGROUP GROUP group c2 BLOCK 10000 STREAMS stream >
(nil)
(15.03s)

Expected behavior

client two's timeout should be 10 seconds.

Additional information

I think client two was signaled in step 4 and reprocess XREADGROUP command again, making timout to reset.