Fix bug with indexing function call

lambdas.kl

@@ -24,7 +24,14 @@ add_10 :: (size: int): int
     return a + b
 
   constant :: 20; result := constant + 10
-  return add(a = 20)
+
+  v5 := add([0] = 1, [1] = 2)
+  v1 := add(a = 1)
+  v2 := add(a = 1, b = 2)
+  v3 := add([0] = 1)
+  v4 := add(b = 1, a = 2)
+
+  return v3
 
 return_constant :: (): int
   constant :: 10