[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/commasAndWhitespaces.fir.kt

@@ -0,0 +1,12 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+fun testCommasAndWhitespaces() {
+    fun bar(i: Int, s: String, x: Any) {}
+
+    bar( 1 , todo() , "" )
+}
+
+fun todo(): Nothing = throw Exception()
+
+
+