Conditionally append to array to make token order explicit

Author: MPLew-is

Sources/SwiftFormatPrettyPrint/TokenStreamCreator.swift

@@ -657,14 +657,13 @@ fileprivate final class TokenStreamCreator: SyntaxVisitor {
     after(node.unknownAttr?.lastToken, tokens: .space)
     after(node.label.lastToken, tokens: .break(.reset, size: 0), .break(.open), .open)
 
-    // If switch/case labels were configured to be indented, insert an extra close break after the
-    // case body.
-    // The `after` call after this `if` block will insert its tokens before this one, matching up
-    // with the `open` break inserted above, which is before all other tokens.
+    // If switch/case labels were configured to be indented, insert an extra `close` break after the
+    // case body to match the `open` break above
+    var afterLastTokenTokens: [Token] = [.break(.close, size: 0), .close]
     if config.indentSwitchCaseLabels {
-       after(node.lastToken, tokens: .break(.close, size: 0))
+      afterLastTokenTokens.append(.break(.close, size: 0))
     }
-    after(node.lastToken, tokens: .break(.close, size: 0), .close)
+    after(node.lastToken, tokens: afterLastTokenTokens)
 
     return .visitChildren
   }
@@ -2046,7 +2045,7 @@ fileprivate final class TokenStreamCreator: SyntaxVisitor {
     }
     return .visitChildren
   }
-  
+
   override func visit(_ node: SameTypeRequirementSyntax) -> SyntaxVisitorContinueKind {
     before(node.equalityToken, tokens: .break)
     after(node.equalityToken, tokens: .space)