ICU: Remove unnecessary nonisolated(unsafe) from static property.

YOCKOW · YOCKOW · commit c775018c4d1c · 2025-06-12T16:39:15.000+09:00
In response to: swiftlang#1296 (comment)
diff --git a/Sources/FoundationInternationalization/ICU/ICU+StringConverter.swift b/Sources/FoundationInternationalization/ICU/ICU+StringConverter.swift
@@ -155,7 +155,7 @@ extension ICU.StringConverter {
 }
 
 extension ICU.StringConverter {
-    nonisolated(unsafe) static private var _converters: LockedState<[String.Encoding: ICU.StringConverter]> = .init(initialState: [:])
+    private static let _converters: LockedState<[String.Encoding: ICU.StringConverter]> = .init(initialState: [:])
 
     static func converter(for encoding: String.Encoding) -> ICU.StringConverter? {
         return _converters.withLock {

Original file line number	Diff line number	Diff line change
`@@ -155,7 +155,7 @@ extension ICU.StringConverter {`
`155`	`155`	`}`
`156`	`156`
`157`	`157`	`extension ICU.StringConverter {`
`158`		`- nonisolated(unsafe) static private var _converters: LockedState<[String.Encoding: ICU.StringConverter]> = .init(initialState: [:])`
	`158`	`+ private static let _converters: LockedState<[String.Encoding: ICU.StringConverter]> = .init(initialState: [:])`
`159`	`159`
`160`	`160`	`static func converter(for encoding: String.Encoding) -> ICU.StringConverter? {`
`161`	`161`	`return _converters.withLock {`