memory leak in TCustomHTTPModule (fphttp.pp)
## Summary
TCustomHTTPModule creates FCORS but doesn't destroy it since it doesn't implement a destructor.
## System Information
I'm using fpc 3.2.2 but I see that there's no destructor in trunk either
## Steps to reproduce
<!-- How one can reproduce the issue - this is very important! -->
Create a project using fpwebfile to serve files, enable heaptrc, request some files, check the memory leak
## Possible fixes
Attached a patch that implements the destructor fixing the memory leak.[fphttpmemleak.diff](/uploads/aae72525c7adb7e329f83d250d17569c/fphttpmemleak.diff)
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