since it only works on the player anyway.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8172 c06c8d41-db1a-0410-9941-cceddc491573
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YPD42V7VOQFGAVLLOSQAQ4SD77L5L3LZHPLFVZIAOHBNDKPO3O4QC
K2CS6TCX2NDVL2ASEHGP4J4K4IJ6FP3ANNKTSIWVG43HPYSBX6ZQC
if (coinflip() && !mons_friendly(monster)
if (coinflip() && foe->atype() == ACT_PLAYER
if (coinflip()
&& foe->atype() == ACT_PLAYER