KT-2044 : "this" added in local variables table in bytecode for local functions also

compiler/testData/checkLocalVariablesTable/namespace$foo$1.kt

@@ -0,0 +1,7 @@
+fun foo() {
+    fun bar()  {
+    }
+}
+
+// METHOD : invoke()V
+// VARIABLE : NAME=this TYPE=Lnamespace$foo$1; INDEX=0