Do not report "can be private" on properties of private class

So #KT-18822 Fixed

idea/src/org/jetbrains/kotlin/idea/inspections/MemberVisibilityCanPrivateInspection.kt

@@ -52,8 +52,9 @@ class MemberVisibilityCanPrivateInspection : AbstractKotlinInspection() {
 
             override fun visitParameter(parameter: KtParameter) {
                 super.visitParameter(parameter)
-                if (parameter.isConstructorDeclaredProperty() && canBePrivate(parameter)) {
+                if (parameter.isConstructorDeclaredProperty()) {
-                    registerProblem(holder, parameter)
+                    if ((parameter.ownerFunction?.parent as? KtClass)?.isPrivate() == true) return
+                    if (canBePrivate(parameter)) registerProblem(holder, parameter)
                 }
             }
         }

idea/testData/inspections/memberVisibilityCanBePrivate/test.kt

@@ -134,4 +134,18 @@ class F(val bar: Int) {
 
 class G(val bar: Int) {
     private inline fun baz() = bar
+}
+
+private class H(val a: String = "",
+        var b: String = "",
+        internal val c: String = "",
+        protected val d: String = "",
+        private val e: String = "") {
+    fun foo() {
+        println(a)
+        println(b)
+        println(c)
+        println(d)
+        println(e)
+    }
 }