sms-part-cdma: add missing break statements in cause_code_to_delivery_state

This patch fixes cause_code_to_delivery_state() by adding two missing
break statements for the case ERROR_CLASS_TEMPORARY and
ERROR_CLASS_PERMANENT in the `switch (error_class)` statement. Without
the break statements, the switch always falls through to the default and
returns MM_SMS_DELIVERY_STATE_UNKNOWN for an `error_class' of value
ERROR_CLASS_TEMPORARY or ERROR_CLASS_PERMANENT.

src/mm-sms-part-cdma.c

@@ -273,8 +273,10 @@ cause_code_to_delivery_state (guint8 error_class,
         return MM_SMS_DELIVERY_STATE_COMPLETED_RECEIVED;
     case ERROR_CLASS_TEMPORARY:
         delivery_state += 0x300;
+        break;
     case ERROR_CLASS_PERMANENT:
         delivery_state += 0x200;
+        break;
     default:
         return MM_SMS_DELIVERY_STATE_UNKNOWN;
     }