[YouTube] Fix fallback throttling decryption function regex #934
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This PR fixes the regex used to get the throttling decryption function code, utilized as a fallback when the lexer fails to parse the function (this should not happen). To do so, the following changes have been made to the regex:
I also made changes on the function used to get the variable representing an array containing the throttling parameter decryption function, which doesn't rely on a specific letter anymore (
b
), but on alphanumeric characters instead (+$
and_
) (this change has been applied on all the regex).