Pull request #4111: Make add_peg_count and set_peg_count protected to be available...

Pull request #4111: Make add_peg_count and set_peg_count protected to be available for the derived class

Merge in SNORT/snort3 from ~SADUNNE/snort3:sadunne_counter_fix to master

Squashed commit of the following:

commit 7508e2410ece25983e2865bc26a69f957b470b74
Author: Sai Srinivas Dunne <sadunne@cisco.com>
Date:   Fri Nov 24 17:51:24 2023 +0530

    perf_mon: fix variable name issue reported by cppcheck

commit ce868f78ddc45a11b2402a321587a8de06fd4e9d
Author: Sai Srinivas Dunne <sadunne@cisco.com>
Date:   Fri Nov 24 11:46:43 2023 +0530

    pegs: Make add_peg_count and set_peg_count protected to be available for
    the derived class.