[DynInst_API:] [dyninst/dyninst] 6a73ab: Fix use of null pointer after check (#1432)

[Tim Haines <noreply@xxxxxxxxxx>]

  Branch: refs/heads/master
  Home:   https://github.com/dyninst/dyninst
  Commit: 6a73abaa9c7298a3e4ce0acf4eb14db8b1cb42fc
      https://github.com/dyninst/dyninst/commit/6a73abaa9c7298a3e4ce0acf4eb14db8b1cb42fc
  Author: Tim Haines <thaines.astro@xxxxxxxxx>
  Date:   2023-05-10 (Wed, 10 May 2023)

  Changed paths:
    M parseAPI/src/BoundFactData.C
    M parseAPI/src/Parser.C
    M proccontrol/src/process.C
    M proccontrol/src/procset.C
    M symtabAPI/src/Object-nt.C

  Log Message:
  -----------
  Fix use of null pointer after check (#1432)

These were found using cppcheck's nullPointerRedundantCheck.