handle other forms that fly, such as bats, as well as any future forms that may place the player in inhospitable terrain when the transformation wears off.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6161 c06c8d41-db1a-0410-9941-cceddc491573
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// Re-check terrain now that be may no longer be flying.
move_player_to_grid( you.x_pos, you.y_pos, false, true, true );