fix: Avoid NPE when computing suggestions for improvements #731
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When providers are located in an area outside of the friction data (most commonly in a coast) but still fall inside the region contour (because it has better resolution), the engine will fail to compute any demand information for it. This lead to and NPE in the suggestions algorithm when computing the relative cost of such providers.
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When providers are located in an area outside of the friction data (most commonly in a coast) but still fall inside the region contour (because it has better resolution), the engine will fail to compute any demand information for it. This lead to and NPE in the suggestions algorithm when computing the relative cost of such providers.