Fixes [2497210].
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8433 c06c8d41-db1a-0410-9941-cceddc491573
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beam.range = spell_range(spell_cast, power, true);
if (beam.range == -1)
beam.range = 0; // spells targeted at self, usually
// Sandblast is different, and gets range updated later
if (spell_cast != SPELL_SANDBLAST)
beam.range = spell_range(spell_cast, power, true);