[IR] update testdata

compiler/testData/ir/irText/expressions/dotQualified.kt.txt

@@ -3,7 +3,7 @@ fun length(s: String): Int {
 }
 
 fun lengthN(s: String?): Int? {
-  return { //BLOCK
+  return { // BLOCK
     val tmp0_safe_receiver: String? = s
     when {
       EQEQ(arg0 = tmp0_safe_receiver, arg1 = null) -> null