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svn:author
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git2svn
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svn:date
V 27
2022-07-29T18:49:43.233883Z
K 7
svn:log
V 567
Fix unused variable warning in sctp_timer.c

With clang 15, the following -Werror warning is produced:

    sys/netinet/sctp_timer.c:510:6: error: variable 'recovery_cnt' set but not used [-Werror,-Wunused-but-set-variable]
            int recovery_cnt = 0;
                ^

The 'recovery_cnt' variable is only used when INVARIANTS is undefined.
Ensure it is only declared and set in that case.

MFC after:	3 days

(cherry picked from commit 5bfd8cf3691381c19296d76d7944d6c1df5f4a75)

Git Hash:   63e8ce61d72a01da4f74f560e993ecafcd914e10
Git Author: dim@FreeBSD.org
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