OSV-2022-476 Stack-buffer-overflow in simple_str_to_doublestr

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47986 Crash type: Stack-buffer-overflow WRITE 1 Crash state: simplestrtodoublestr icalvaluenewfromstring icalparseraddline...