Private constant HttpHeaders.UPGARDE misspelled [SPR-11241]

[spring-projects-issues]

Jon Ekdahl opened SPR-11241 and commented

org.springframework.http.HttpHeaders.UPGARDE should be "UPGRADE". I was browsing the sources for predefined header names when I stumbled onto the misspellt constant. The constant is not part of the public API, but I guess you would want to correct it anyway.

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Affects: 4.0 GA

Referenced from: commits ff92f5a