Make USE_COMPUTED_GOTO a config option in mpconfig.h.

Disabled by default.  Enabled in unix port.

1 files changed, 1 insertions, 1 deletions

diff --git a/py/objstr.c b/py/objstr.c
index 08db2af66..fc1e1c569 100644
--- a/py/objstr.c
+++ b/py/objstr.c
@@ -662,7 +662,7 @@ mp_obj_t str_format(uint n_args, const mp_obj_t *args) {
             if (arg_i > 0) {
                 nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "cannot switch from automatic field numbering to manual field specification"));
             }
-            int index;
+            int index = 0;
             if (str_to_int(vstr_str(field_name), &index) != vstr_len(field_name) - 1) {
                 nlr_raise(mp_obj_new_exception_msg(&mp_type_KeyError, "attributes not supported yet"));
             }