ac4e438 Sanity check transaction scripts in DecodeHexTx (Andrew Chow)
5b75c47 Add a valid opcode sanity check to CScript (Andrew Chow)
Tree-SHA512: a516e95c274c9d131123150c798cae8bed75925e8a4d59469967dd7f1d49f7f8161e26afb61024b821bd8dcdffdfd0d19b8dcad20b39b1106820326d8d56904d
Backport of Core PR10481
https://github.com/bitcoin/bitcoin/pull/10481/