if a chunk load was cancelled after generating stage started
it would short circuit return with a null.
however this skipped the creation of the loadTask, which some code
would then invoke in requestChunk and trigger an NPE.
This then likely left an incomplete corrupt request in the chunk map
which then crashes servers.
It should fix these isseues
Fixes#1775Fixes#1743
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing
Bukkit Changes:
43b46cbd SPIGOT-4608: Improve quality of MapMeta APIs
CraftBukkit Changes:
c7ba9790 Fix incorrect method descriptor in previous commit
3d19f011 SPIGOT-4608: Improve quality of MapMeta APIs
