Fix JS source maps for when expression

js/js.translator/testData/lineNumbers/complexExpressionAsDefaultArgument.kt

@@ -11,4 +11,4 @@ fun baz() = 1
 
 fun bar() = 2
 
-// LINES: 8 3 3 2 2 3 4 4 4 5 5 2 8 8 10 10 10 12 12 12
+// LINES: 8 3 3 2 2 4 3 4 4 4 5 5 2 8 8 10 10 10 12 12 12

js/js.translator/testData/lineNumbers/whenEntryWithMultipleConditions.kt

@@ -0,0 +1,21 @@
+fun box(x: Int) {
+    println(
+            when (
+                x
+            ) {
+                1,
+                2,
+                3 ->
+                    55
+
+                4,
+                5 ->
+                    66
+
+                else ->
+                    77
+            }
+    )
+}
+
+// LINES: 19 4 4 3 6 4 6 4 7 4 8 9 9 11 4 11 4 12 13 13 16 16 2

js/js.translator/testData/lineNumbers/whenIn.kt

@@ -13,4 +13,4 @@ fun foo(): Int = 23
 
 fun bar(): IntRange = 1000..2000
 
-// LINES: 10 2 2 2 2 3 4 4 5 6 6 7 8 8 12 12 12 14 14 14
+// LINES: 10 2 2 2 2 3 3 4 4 5 5 6 6 7 7 8 8 12 12 12 14 14 14

js/js.translator/testData/lineNumbers/whenIs.kt

@@ -13,4 +13,4 @@ open class A
 
 open class B : A()
 
-// LINES: 10 2 2 2 2 3 4 4 5 6 6 8 8 12 * 14 14
+// LINES: 10 2 2 2 2 3 3 4 4 5 5 6 6 8 8 12 * 14 14