Fix 3.2 warnings
We get a warning from the 3.2 CI run
rtree.rb:539: warning: undefining the allocator of T_DATA class RTree::Style
which I think just needs the line
rb_undef_alloc_func(cRTreeStyleBase);
to ext/rtree/rtree.c
We get a warning from the 3.2 CI run
rtree.rb:539: warning: undefining the allocator of T_DATA class RTree::Style
which I think just needs the line
rb_undef_alloc_func(cRTreeStyleBase);
to ext/rtree/rtree.c