Initialize e in _mons_find_level_exits().

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6041 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on June 22, 2008
2RMAZBQKZQX7OCQ3AFHNJUKU34A33R7O4UAWGAXMPONLYJI5TEXAC
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