Tokenizer - removing unnecessary boxing

[vladad]

Instead of "Integer.valueOf(ch)" can be simply "(int) ch"

[pivotal-issuemaster]

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[luyaor]

Dear Vladimír Domes,

We are researchers working on identifying redundant development and duplicated pull requests. We have found there is a pull request: #1817 which might be a potentially duplicate to this one. We would really appreciate if you could help us to validate and give us feedback.

Thank you very much for your time!

Sincerely,
Luyao

[snicoll]

@FancyCoder0 good catch again, thank you.

@vladad thank you for opening your first pull request in Spring Framework and apologize for not triaging it properly. This has been fixed in the meantime.