IR/Android: place the cache field first

to avoid NPEs if it is used during instance initialization.

Author: pyos

plugins/android-extensions/android-extensions-compiler/src/org/jetbrains/kotlin/android/synthetic/codegen/AndroidIrExtension.kt

@@ -201,7 +201,8 @@ private class AndroidIrTransformer(val extension: AndroidIrExtension, val plugin
             return super.visitClassNew(declaration)
 
         if ((containerOptions.cache ?: extension.getGlobalCacheImpl(declaration)).hasCache) {
-            declaration.declarations += declaration.getCacheField()
+            // Place the field first so that it is initialized before any init blocks.
+            declaration.declarations.add(0, declaration.getCacheField())
             declaration.declarations += declaration.getClearCacheFun()
             declaration.declarations += declaration.getCachedFindViewByIdFun()
         }

plugins/android-extensions/android-extensions-compiler/testData/codegen/android/singleFile/0.kt

@@ -33,9 +33,11 @@ class MyActivity(): Activity() {
         } as T?
     }
 
+    private val textViewString = textView1.toString()
+
     public fun box(): String {
         val result = when {
-            textView1.toString() == "TextView" && password.toString() == "EditText" && login.toString() == "Button" -> "OK"
+            textViewString == "TextView" && password.toString() == "EditText" && login.toString() == "Button" -> "OK"
             else -> ""
         }