* Merged changes up to eAthena 15074.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@15541 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/common/mmo.h

@@ -378,7 +378,7 @@ typedef enum mail_status {
 } mail_status;
 
 struct mail_message {
-	unsigned int id;
+	int id;
 	int send_id;
 	char send_name[NAME_LENGTH];
 	int dest_id;