Sleep sourcekit-lsp’s main thread for 10 years instead of leaking a continuation

The previous implementaiton of never fulfilling a continuation printed the following message to stderr:

SWIFT TASK CONTINUATION MISUSE: run() leaked its continuation!

Author: ahoppen

Sources/sourcekit-lsp/SourceKitLSP.swift

@@ -267,9 +267,9 @@ struct SourceKitLSP: AsyncParsableCommand {
       }
     )
 
-    // Park the main function.
+    // Park the main function by sleeping for 10 years.
     // All request handling is done on other threads and sourcekit-lsp exits by calling `_Exit` when it receives a
     // shutdown notification.
-    let _: Void = await withCheckedContinuation { _ in }
+    try await Task.sleep(for: .seconds(60 * 60 * 24 * 365 * 10))
   }
 }