== turned into a safe-call

compiler/testData/diagnostics/tests/delegatedProperty/missedSetter.kt

@@ -1,8 +1,9 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
 var a: Int by <!DELEGATE_SPECIAL_FUNCTION_MISSING!>A()<!>
 
 class A {
     fun get(t: Any?, p: PropertyMetadata): Int {
-      t.equals(p) // to avoid UNUSED_PARAMETER warning
       return 1
     }
 }