OSV-2020-1886 Use-of-uninitialized-value in gs_scan_token

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21622 Crash type: Use-of-uninitialized-value Crash state: gsscantoken interp gscallinterp...

OSV-2020-1878 Use-of-uninitialized-value in s_A85D_process

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21616 Crash type: Use-of-uninitialized-value Crash state: sA85Dprocess gsscantoken interp...

OSV-2020-1869 Use-of-uninitialized-value in gs_scan_token

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21625 Crash type: Use-of-uninitialized-value Crash state: gsscantoken tokenexeccontinue interp...