WireGuardKit: Assert that resolutionResults must not contain failures

Signed-off-by: Andrej Mihajlov <and@mullvad.net>

WireGuardKit/Sources/WireGuardKit/WireGuardAdapter.swift

@@ -314,7 +314,7 @@ public class WireGuardAdapter {
         }
 
         let resolvedEndpoints = resolutionResults.map { (result) -> Endpoint? in
-            return try? result?.get()
+            return try! result?.get()
         }
 
         return resolvedEndpoints