fix Swift 4.2 compile error (#384)

weissi · Lukasa · commit 359f35930aaf · 2018-05-02T18:42:48.000+01:00
Motivation:

We had a public typealias for an internal type, that's an error now in
Swift 4.2.

Modifications:

make the typealias internal.

Result:

compiles in Swift 4.2
diff --git a/Sources/NIO/PriorityQueue.swift b/Sources/NIO/PriorityQueue.swift
@@ -91,10 +91,10 @@ extension PriorityQueue {
   @available(*, deprecated, renamed: "Element")
   public typealias T = Element
   @available(*, deprecated, renamed: "PriorityQueue.Iterator")
-  public typealias PriorityQueueIterator<T: Comparable> = PriorityQueue<T>.Iterator
+  typealias PriorityQueueIterator<T: Comparable> = PriorityQueue<T>.Iterator
 }
 
 extension PriorityQueue.Iterator {
   @available(*, deprecated, renamed: "Element")
-  public typealias T = Element
+  typealias T = Element
 }

Original file line number	Diff line number	Diff line change
`@@ -91,10 +91,10 @@ extension PriorityQueue {`
`91`	`91`	`@available(*, deprecated, renamed: "Element")`
`92`	`92`	`public typealias T = Element`
`93`	`93`	`@available(*, deprecated, renamed: "PriorityQueue.Iterator")`
`94`		`- public typealias PriorityQueueIterator<T: Comparable> = PriorityQueue<T>.Iterator`
	`94`	`+ typealias PriorityQueueIterator<T: Comparable> = PriorityQueue<T>.Iterator`
`95`	`95`	`}`
`96`	`96`
`97`	`97`	`extension PriorityQueue.Iterator {`
`98`	`98`	`@available(*, deprecated, renamed: "Element")`
`99`		`- public typealias T = Element`
	`99`	`+ typealias T = Element`
`100`	`100`	`}`