py: Remove name of var arg from macros with var args.
diff --git a/py/malloc.c b/py/malloc.c
index 41cf1fd..27eaac1 100644
--- a/py/malloc.c
+++ b/py/malloc.c
@@ -8,7 +8,7 @@
 #if 0 // print debugging info
 #define DEBUG_printf DEBUG_printf
 #else // don't print debugging info
-#define DEBUG_printf(args...) (void)0
+#define DEBUG_printf(...) (void)0
 #endif
 
 #if MICROPY_MEM_STATS