Solved issue 167. Bug: complex path rendered wrong

[SanCheung]

https://github.com/memononen/nanosvg/issues/167 complex path rendered wrong

Root cause: In the case of some compressed svgs, in the curve command("a/A"), parameters 3\4 may be merged.

[tesch1]

Check out the grammar: https://www.w3.org/TR/SVG/paths.html#PathDataBNF

1. there can be any number of elliptical_arc_argument after the 'A/a'
2. the flags are in positions 4 and 5, modulo 6 within the elliptical_arc_argument

[SanCheung]

Check out the grammar: https://www.w3.org/TR/SVG/paths.html#PathDataBNF

1. there can be any number of elliptical_arc_argument after the 'A/a'
2. the flags are in positions 4 and 5, modulo 6 within the elliptical_arc_argument

yes. I wrong. the flags are in positions 4 and 5, positions 3 is "x-axis-rotation"

[memononen]

Thank you for the fix!