Test fixed (nullability)

compiler/testData/diagnostics/tests/Builders.jet

@@ -132,7 +132,7 @@ class LI() : BodyTag("li")
 class P() : BodyTag("p")
 class H1() : BodyTag("h1")
 class A() : BodyTag("a") {
-  public var href : String
+  public var href : String?
     get() = attributes["href"]
     set(value) {
       attributes["href"] = value

compiler/testData/diagnostics/tests/regressions/Jet72.jet

@@ -10,9 +10,9 @@ abstract class Item(val room: Object) {
 val items: ArrayList<Item> = ArrayList<Item>
 
 fun test(room : Object) {
-  for(val item: Item in items) {
+  for(val item: Item? in items) {
-    if (item.room === room) {
+    if (item?.room === room) {
-      System.out?.println("You see " + item.name)
+      System.out?.println("You see " + item?.name)
     }
   }
 }

templatelib/test/TemplateHtmlTest.kt

@@ -37,7 +37,7 @@ html {
     // content generated by
     p {
       for (arg in args)
-      +arg
+        +arg
     }
   }
 }