iwlwifi: dbg_ini: remove redundant curly brackets from trigger collection flow

remove redundant curly brackets from iwl_fw_ini_dump_trigger and
iwl_fw_ini_get_trigger_len

Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>