[Bug 242967] [patch] powerd free freqstr if sysctl fails

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242967

            Bug ID: 242967
           Summary: [patch] powerd free freqstr if sysctl fails
           Product: Base System
           Version: 12.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs at FreeBSD.org
          Reporter: chwoithe at yahoo.com

Created attachment 210310
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=210310&action=edit
patch to free freqstr if sysctl fails

In the event that the (second) sysctl fails in read_freqs(), the memory
allocated for freqstr is not freed before the function returns.  I've attached
a patch to free the allocated memory before the function returns.

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