Short code to full code recovery has a bug

[drinckes]

In some cases, recovering a short code to a full code does not return the nearest match.

Calling recoverNearest('22+', 14.9333, -23.5125) returns 796RXF22+. This is not correct - the nearest match is 796RXG22+.

The problem seems to be with the step where the reference latitude and longitude are rounded down before generating the candidate code. In the above example, it should generate a code whose center is at most .05 degrees from the reference location, but due to the rounding down it is .08 degrees away.

It appears that removing the rounding down step entirely fixes this.

[drinckes]

Some more detail. Rounding the reference location, can result in a padding section that is more than one cell away from the correct position. The reason this is happening is that the code is using Math.floor. Either changing this to Math.round, or removing it entirely, fixes the problem.