esp32/esp32_rmt: Clear config struct before filling it out.

Or unset entries will have garbage in them.

Signed-off-by: mishafarms <github@mishafarms.us>

ports/esp32/esp32_rmt.c

@@ -96,7 +96,7 @@ STATIC mp_obj_t esp32_rmt_make_new(const mp_obj_type_t *type, size_t n_args, siz
     self->carrier_freq = carrier_freq;
     self->loop_en = false;
 
-    rmt_config_t config;
+    rmt_config_t config = {0};
     config.rmt_mode = RMT_MODE_TX;
     config.channel = (rmt_channel_t)self->channel_id;
     config.gpio_num = self->pin;