Added const qualifier to the w1~w4 arguments of npc_parse_shop

Signed-off-by: Haru <haru@dotalux.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/map/npc.h b/src/map/npc.h
index 4899838f1..9f8767877 100644
--- a/src/map/npc.h
+++ b/src/map/npc.h
@@ -235,7 +235,7 @@ struct npc_interface {
 	struct npc_data *(*create_npc) (enum npc_subtype subtype, int m, int x, int y, uint8 dir, int16 class_);
 	struct npc_data* (*add_warp) (char *name, short from_mapid, short from_x, short from_y, short xs, short ys, unsigned short to_mapindex, short to_x, short to_y);
 	const char *(*parse_warp) (const char *w1, const char *w2, const char *w3, const char *w4, const char *start, const char *buffer, const char *filepath, int *retval);
-	const char* (*parse_shop) (char *w1, char *w2, char *w3, char *w4, const char *start, const char *buffer, const char *filepath, int *retval);
+	const char *(*parse_shop) (const char *w1, const char *w2, const char *w3, const char *w4, const char *start, const char *buffer, const char *filepath, int *retval);
 	const char* (*parse_unknown_object) (char *w1, char *w2, char *w3, char *w4, const char *start, const char *buffer, const char *filepath, int *retval);
 	void (*convertlabel_db) (struct npc_label_list *label_list, const char *filepath);
 	const char* (*skip_script) (const char *start, const char *buffer, const char *filepath, int *retval);