[scudo] Make report pointers const. (#144624)

Mark as many of the reportXX functions that take pointers const. This
avoid the need to use const_cast when calling these functions on an
already const pointer.

Fix reportHeaderCorruption calls where an argument was passed into an
append call that didn't use them.

GitOrigin-RevId: a2cee05449636c8e0d630b2ccdc71f2d422227a9
4 files changed