Append newline to EOF for .txt test data files

Reverts and fixes 102f0d3

compiler/testData/lazyResolve/recursiveComparator/UnresolvedAnnotationOnObject.txt

@@ -9,4 +9,4 @@ internal val some: test.SomeObject
     public class object <class-object-for-SomeObject> : test.SomeObject {
         /*primary*/ private constructor <class-object-for-SomeObject>()
     }
-}
+}