Fix 'CountableRange is now a Range. No need to convert any more' error when building with Swift 5.

tkremenek · tkremenek · commit 2e05264781af · 2018-11-13T14:42:59.000-08:00
diff --git a/Foundation/URLSession/Message.swift b/Foundation/URLSession/Message.swift
@@ -55,7 +55,7 @@ extension _NativeProtocol._ParsedResponseHeader {
             data[data.endIndex - 2] == _Delimiters.CR &&
             data[data.endIndex - 1] == _Delimiters.LF
             else { return nil }
-        let lineBuffer = data.subdata(in: Range(data.startIndex..<data.endIndex-2))
+        let lineBuffer = data.subdata(in: data.startIndex..<data.endIndex-2)
         guard let line = String(data: lineBuffer, encoding: .utf8) else { return nil}
         return byAppending(headerLine: line)
     }

Original file line number	Diff line number	Diff line change
`@@ -55,7 +55,7 @@ extension _NativeProtocol._ParsedResponseHeader {`
`55`	`55`	`data[data.endIndex - 2] == _Delimiters.CR &&`
`56`	`56`	`data[data.endIndex - 1] == _Delimiters.LF`
`57`	`57`	`else { return nil }`
`58`		`- let lineBuffer = data.subdata(in: Range(data.startIndex..<data.endIndex-2))`
	`58`	`+ let lineBuffer = data.subdata(in: data.startIndex..<data.endIndex-2)`
`59`	`59`	`guard let line = String(data: lineBuffer, encoding: .utf8) else { return nil}`
`60`	`60`	`return byAppending(headerLine: line)`
`61`	`61`	`}`