Add regression test for PROTECTED_CONSTRUCTOR_NOT_IN_SUPER_CALL diagnostic

#KT-20507

compiler/testData/diagnostics/tests/generics/protectedSuperCall.kt

@@ -0,0 +1,21 @@
+// !WITH_NEW_INFERENCE
+// FILE: GA.kt
+
+package test.x
+
+open class GA<T> protected constructor()
+
+// FILE: Main.kt
+package test
+
+import test.x.GA
+
+class C : GA<Any>() {
+    companion object {
+        fun bar() = <!PROTECTED_CONSTRUCTOR_NOT_IN_SUPER_CALL!>GA<!><Any>() // Should be error
+    }
+}
+
+fun main(args: Array<String>) {
+    C.bar()
+}