compile fix

Author: RandomHashTags

Sources/VariableLengthArray/Joined.swift

@@ -1,4 +1,6 @@
 
+#if compiler(>=6.2)
+
 extension VLArray {
     public struct Joined: ~Copyable, @unchecked Sendable {
         public typealias Index = Int
@@ -123,4 +125,6 @@ extension VLArray {
         //public mutating func swapAt(_ i: Index, _ j: Index) {
         //}
     }
-}
+}
+
+#endif

Sources/VariableLengthArray/VLArray.swift

@@ -234,6 +234,7 @@ extension VLArray where Element == UInt8 {
 }
 
 // MARK: Join
+#if compiler(>=6.2)
 extension VLArray {
     @inlinable
     public func join<let count: Int, E: Error>(
@@ -255,4 +256,5 @@ extension VLArray {
             try closure(&joined)
         }
     }
-}
+}
+#endif