abi_tag.cc: Avoid spurious fails with check-debug.

2013-06-25  Paolo Carlini  <paolo.carlini@oracle.com>

	* testsuite/23_containers/map/modifiers/erase/abi_tag.cc: Avoid
	spurious fails with check-debug.
	* testsuite/23_containers/multimap/modifiers/erase/abi_tag.cc:
	Likewise.
	* testsuite/23_containers/set/modifiers/erase/abi_tag.cc: Likewise.
	* testsuite/23_containers/multiset/modifiers/erase/abi_tag.cc:
	Likewise.

From-SVN: r200438