Account for substitutions of one variable for another (it must remain a variable)

compiler/testData/diagnostics/tests/platformTypes/methodCall/visitor.kt

@@ -0,0 +1,23 @@
+// FILE: p/Visitor.java
+
+package p;
+
+public interface Visitor<D> {
+
+}
+
+// FILE: p/Element.java
+
+package p;
+
+public class Element {
+    public <D> R accept(@NotNull Visitor<D> visitor, D data) {return null;}
+}
+
+// FILE: k.kt
+
+import p.*
+
+fun test(v: Visitor<Nothing>, e: Element) {
+    e.accept(v, null)
+}