Improve Variant filtering efficiency with one character.
Improve Variant filtering efficiency with one character.

Plenty more optimization to do but just wanted to highlight how much
subtle things can matter.

woodymit/millstone,woodymit/millstone_accidental_source,woodymit/millstone,woodymit/millstone_accidental_source,woodymit/millstone,woodymit/millstone_accidental_source,churchlab/millstone,woodymit/millstone_accidental_source,churchlab/millstone,churchlab/millstone,woodymit/millstone,churchlab/millstone