Minor

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/CompletionSession.kt

@@ -316,10 +316,12 @@ abstract class CompletionSession(protected val configuration: CompletionSessionC
     }
 
     protected fun getRuntimeReceiverTypeReferenceVariants(): Pair<ReferenceVariants, LookupElementFactory>? {
+        val evaluator = file.getCopyableUserData(KtCodeFragment.RUNTIME_TYPE_EVALUATOR) ?: return null
+
         val explicitReceiver = callTypeAndReceiver.receiver as? KtExpression ?: return null
         val type = bindingContext.getType(explicitReceiver) ?: return null
         if (!TypeUtils.canHaveSubtypes(KotlinTypeChecker.DEFAULT, type)) return null
-        val evaluator = file.getCopyableUserData(KtCodeFragment.RUNTIME_TYPE_EVALUATOR) ?: return null
+
         val runtimeType = evaluator(explicitReceiver)
         if (runtimeType == null || runtimeType == type) return null