Merge pull request #797 from JetBrains/rr/kt8365

KT-8365 Bogus "Receiver never used" warning when receiver is used in invoke() convention call

idea/testData/inspections/unusedReceiverParameter/implicitReceiverOfInvokeConvention.kt

@@ -0,0 +1,29 @@
+// KT-8365 Bogus "Receiver never used" warning
+class FunctionLike {
+    fun invoke() {}
+}
+
+class OwnerClass {
+    val functionLike = FunctionLike()
+    val function = { }
+}
+
+val OwnerClass.extFunctionLike = FunctionLike()
+val OwnerClass.extFunction = { }
+
+
+fun OwnerClass.f1() {
+    functionLike()
+}
+
+fun OwnerClass.f2() {
+    function()
+}
+
+fun OwnerClass.f3() {
+    extFunctionLike()
+}
+
+fun OwnerClass.f4() {
+    extFunction()
+}