Prevent endless loop of loading same page

[geekgonecrazy]

When loading up rocketchat/rocket.chat here on github it entered two different endless loops looking at the same page repeatedly. With the addition of these two checks it now loads the entire history successfully.

closes #213

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[geekgonecrazy]

@googlebot I signed it!

[mik-laj]

@geekgonecrazy Thanks! I'm starting to test this change.

[mik-laj]

Thanks. It works.

Before it stuck on 8.

[mik-laj]

Does this project have any CI? I cannot see any automatic tests running.

[geekgonecrazy]

I'm not aware of one if so. Thanks for trying and confirming it worked for you 🙏

[tstromberg]

Nice catch. Thank you!