Fix exception from InvokeProcessor when we get invoke from extension function type.

compiler/testData/diagnostics/tests/resolve/invoke/invokeAndSmartCast.kt

@@ -0,0 +1,23 @@
+class A(val x: (String.() -> Unit)?)
+
+fun test(a: A) {
+    if (a.x != null) {
+        "".<!DEBUG_INFO_SMARTCAST!>(a.x)<!>()
+        a.<!UNSAFE_CALL!>x<!>("") // todo
+        <!DEBUG_INFO_SMARTCAST!>(a.x)<!>("")
+    }
+    "".<!UNSAFE_CALL!>(a.x)<!>()
+    a.<!UNSAFE_CALL!>x<!>("")
+    <!UNSAFE_CALL!>(a.x)<!>("")
+
+    with("") {
+        a.<!UNSAFE_CALL!>x<!>(<!NO_VALUE_FOR_PARAMETER!>)<!>
+        <!UNSAFE_CALL!>(a.x)<!>()
+        if (a.x != null) {
+            a.<!UNSAFE_CALL!>x<!>(<!NO_VALUE_FOR_PARAMETER!>)<!> // todo
+            <!DEBUG_INFO_SMARTCAST!>(a.x)<!>()
+        }
+    }
+}
+
+fun <T, R> with(receiver: T, f: T.() -> R): R = receiver.f()

compiler/testData/diagnostics/tests/resolve/invoke/invokeAndSmartCast.txt

@@ -0,0 +1,12 @@
+package
+
+public fun test(/*0*/ a: A): kotlin.Unit
+public fun </*0*/ T, /*1*/ R> with(/*0*/ receiver: T, /*1*/ f: T.() -> R): R
+
+public final class A {
+    public constructor A(/*0*/ x: (kotlin.String.() -> kotlin.Unit)?)
+    public final val x: (kotlin.String.() -> kotlin.Unit)?
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}