range-set: Add test coverage for range_set_destroy(NULL).
authorBen Pfaff <blp@gnu.org>
Fri, 24 Apr 2009 03:14:52 +0000 (20:14 -0700)
committerBen Pfaff <blp@gnu.org>
Sun, 7 Jun 2009 04:11:03 +0000 (21:11 -0700)
"gcov -b" showed that range_set_destroy() was never called with a NULL
argument.  There's no reason not to test that too (although of course it
is unlikely to be broken).


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