this line causes build failure on gcc-11

[tuomO42]

https://github.com/alliedmodders/metamod-source/blame/f5f14786b9341b1ccc24334573f0d57d526b231b/core/sourcehook/sh_memory.h#L299
im pretty new top c++ so this might be an invalid issue

This is old code so i assume its something in my setup that is wrong but couldn't get compiling to work without changeing it to unsigned long rlower, rupper;

im running ubuntu 24 and compiled using gcc-11 + g++-11

if this is an invalid issue, woulod really appreciate if someone could leave a comment explaining what is happening :D