nth_element_and_half_boxes::apply uses local variable with same name as function parameter

[AndrewAtAvenza]

Compiling 1.69 with VS2019's v142 toolset & arguments /std:c++17 /permissive- I get the following:

[...]boost\include\boost\geometry\index\detail\rtree\pack_create.hpp(80,1): warning C4457: declaration of 'median' hides function parameter

followed by several pages of further complaints. I found that renaming the local 'median' to something like 'edge_median' and updating the two usages of the variable (next two lines) the warning went away.