minor fix for StructureMatcher test_rms_vs_minimax (was an edge case and sensitive to floating point precision)
minor fix for StructureMatcher test_rms_vs_minimax (was an edge case and sensitive to floating point precision)

Bismarrck/pymatgen,Bismarrck/pymatgen,Bismarrck/pymatgen,Bismarrck/pymatgen,Bismarrck/pymatgen