Fixes invalid read when using fill tool in empty tilemap (!35619) · Merge requests · Rafał Mikrut / godot · GitLab

Rafał Mikrut requested to merge github/fork/timothyqiu/tile-map-access into master Jan 27, 2020

Created by: timothyqiu

This fixes #34854 (closed)

Checks the cache index.
Uses NULL instead of 0 when assigning to the pointer.