Convert property initializer to getter in

JvmPlatforms.unspecifiedJvmPlatform

This unties static initialization loop which lead to NCDFE and other
issues.

compiler/frontend.java/src/org/jetbrains/kotlin/platform/jvm/JvmPlatform.kt

@@ -26,7 +26,8 @@ object JvmPlatforms {
     // as previously some clients used TargetPlatform just as platform-marker
     // and didn't care about particular jvmTarget.
     // TODO(dsavvinov): review all usages and choose proper JvmTarget
-    val unspecifiedJvmPlatform: TargetPlatform = CompatJvmPlatform
+    val unspecifiedJvmPlatform: TargetPlatform
+        get() = CompatJvmPlatform
 
     val defaultJvmPlatform: TargetPlatform = jvmTargetToJdkPlatform[JvmTarget.DEFAULT]!!