py: Add missing #endif.
diff --git a/py/mpconfig.h b/py/mpconfig.h
index 7ed99ac..0dd84d1 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -252,6 +252,7 @@
 // Whether str object is proper unicode
 #ifndef MICROPY_PY_BUILTINS_STR_UNICODE
 #define MICROPY_PY_BUILTINS_STR_UNICODE (0)
+#endif
 
 // Whether to support bytearray object
 #ifndef MICROPY_PY_BUILTINS_BYTEARRAY