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-rw-r--r--src/map/clif.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/map/clif.c b/src/map/clif.c
index abc782b49..cb4450b6d 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -9797,8 +9797,8 @@ void clif_parse_NpcStringInput(int fd, struct map_session_data* sd)
int npcid = RFIFOL(fd,4);
const char* message = (char*)RFIFOP(fd,8);
- if( message_len < 0 )
- message_len = 0;
+ if( message_len <= 0 )
+ return; // invalid input
safestrncpy(sd->npc_str, message, min(message_len,CHATBOX_SIZE));
npc_scriptcont(sd, npcid);