mutation resistance mutation.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4664 c06c8d41-db1a-0410-9941-cceddc491573
NKBCZUWV4QQBHFXIVREAZ35Z7RDB4KV2TV3Q5YFSTQRBNPLW6IKAC
// if little mutated, do something else instead
if (punishment < 2 && how_mutated() <= random2(3))
// if little mutated or can't unmutate, do something else instead
if ((punishment < 2 && how_mutated() <= random2(3))
|| player_mutation_level(MUT_MUTATION_RESISTANCE) == 3)