[pshinter] Ensure all point flags are initialized.
Only off curve point flags were fully initialized.
- src/pshinter/pshalgo.c (psh_glyph_init): always initialize flags.
Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43930
Only off curve point flags were fully initialized.
Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43930