Temporary added DEPRECATED_LAMBDA_SYNTAX to tests.

It will be fixed soon.

compiler/testData/diagnostics/tests/infos/SmartCasts.kt

@@ -177,8 +177,8 @@ fun returnFunctionLiteralBlock(a: Any?): Function0<Int> {
     else return { 1 }
 }
 fun returnFunctionLiteral(a: Any?): Function0<Int> =
-    if (a is Int) { (): Int -> <!DEBUG_INFO_SMARTCAST!>a<!> }
-    else { () -> 1 }
+    if (a is Int) { <!DEPRECATED_LAMBDA_SYNTAX!>(): Int<!> -> <!DEBUG_INFO_SMARTCAST!>a<!> }
+    else { <!DEPRECATED_LAMBDA_SYNTAX!>()<!> -> 1 }
 
 fun mergeSmartCasts(a: Any?) {
   if (a is String || a is Int) {