Add variance modifier fix corrected: primary constructor parameters are taken into account

idea/testData/inspections/addVarianceModifier/test.kt

@@ -21,4 +21,8 @@ abstract class AbstractOut<T> {
 abstract class AbstractIn<T>(private val foo: T) {
     fun bar(arg: T) = foo == arg
 }
-interface Empty<T>
+interface Empty<T>
+
+abstract class AbstractInv<T>(var foo: T)
+
+class InvUser<T>(val user: AbstractInv<T>)