OSV-2024-309 Use-of-uninitialized-value in fast_forward_first_n_chars

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=66944 Crash type: Use-of-uninitialized-value Crash state: fastforwardfirstnchars jitcompile pcre2jitcompile8...