Skip } in associative array

[jmc-netactuate]

Add consumeStringUntilNotByte: it does what it says on the tin, consumes the string until it encounters a byte other than the lookingForByte.

Use consumeStringUntilNotByte in consumeAssociativeArray to consume the '}' closing bracket, which is necessary when there is additional content beyond the end of a nested associative array.

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