SetterBackingFieldAssignmentInspection: fix exception

#KT-38520 Fixed

idea/testData/inspectionsLocal/setterBackingFieldAssignment/functionCallWithSetterParam2.kt

@@ -0,0 +1,9 @@
+// PROBLEM: none
+class Test {
+    var foo: Int = 10
+        <caret>set(value: Int) {
+            bar(value = value)
+        }
+
+    fun bar(value: Int) {}
+}