Fixed NaN vote error on the Utopian bot

While playing around with the new version of the Utopian bot, I noticed that the 'task-requests' where not upvoted, and couldn't seem to find why.

One of the posts I found to be non-upvoted in this category was actually pointing to a permlink that didn't exist but the others should have worked. After digging a bit, I realized what was going on:

• Because the bot couldn't find that wrong permlink, it thought that this post had no upvote
• At some point, the nb of upvotes is used in a division, and well. if you remember your maths lesson, dividing by zero is not a thing you want to do :

• Dividing by zero cause a NaN result to the calculate (Not a Number) and therefore the post wilth the wrong permlink couldn't be upvoted. The one with the right permlink was already upvoted so @elear fixed this in the database.

Now, to understand what was going on with the other contributions and prevent this I had to dig a little bit more and realize that:

• When calculating the votes pool for each categories, the votes are added to each other.
• Only one NaN is sufficient to ruin it all and cause the reward pool for the category to become NaN.

Therefore, I made sure in this commit that if we get a null number of votes for a reason or another, we'll set it to one instead.

It will prevent this situation from happening again.

@stoodkev

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Posted on Utopian.io - Rewarding Open Source Contributors

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