Simplify expression

diff --git a/src/test/kotlin/net/pterodactylus/sone/web/ajax/JsonPageTest.kt b/src/test/kotlin/net/pterodactylus/sone/web/ajax/JsonPageTest.kt
index 84fca49..ea882d3 100644 (file)
--- a/src/test/kotlin/net/pterodactylus/sone/web/ajax/JsonPageTest.kt
+++ b/src/test/kotlin/net/pterodactylus/sone/web/ajax/JsonPageTest.kt
@@ -20,7 +20,7 @@ abstract class JsonPageTest(
                page.createJsonObject(freenetRequest)
        }
 
-       private val JsonReturnObject.error get() = if (this is JsonErrorReturnObject) this.error else null
+       private val JsonReturnObject.error get() = (this as? JsonErrorReturnObject)?.error
 
        protected fun assertThatJsonIsSuccessful() {
                assertThat(json.isSuccess, equalTo(true))