[TD] Update testdata according to previous commit

compiler/testData/codegen/boxInline/anonymousObject/kt15751.kt

@@ -1,5 +1,5 @@
-// FILE: 1.kt
 // NO_CHECK_LAMBDA_INLINING
+// FILE: 1.kt
 package test
 
 class A {
@@ -32,4 +32,4 @@ fun box(): String {
     var result = "fail"
     A().foo { result = "OK" }
     return result
-}
+}