net/http: No need to use a Windows-31J encoded regexp to strip the Host #4286
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I noticed this regexp because of the crash reported in #4119 (comment)
It was introduced by @nurse in c1652035644, but I don't see any reason to set a
Windows-31J
encoding on this regexp.It's probably not a big deal, but I'm thinking we might as well use a default
US-ASCII
.cc @XrXr @tenderlove