Change param name of AStar's _estimate_cost
method
#92123
Merged
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A* classes all have two similar cost functions:
_estimate_cost(from, to)
_compute_cost(from, to)
It's easy to misunderstand that their second parameters are the same. But in fact,
_estimate_cost()
receives the end point of the search query, while_compute_cost()
receives a connected (neighbour) point.