Fixed episode 18, Mejai's daily quest (#8557)

Follow-up : https://github.com/rathena/rathena/commit/75c3fd1fc3a0dd0dc61f90d5864bb44aa9a1e192

Thanks to @monbazko

npc/re/quests/quests_18.txt

@@ -12253,18 +12253,24 @@ rachel,70,135,4	script(CLOAKED)	Mejai#E18_7	4_M_DST_CHILD,{
 		mes "Grand opening over! Shall we now put our hearts into our work?";
 		next;
 	}
-	setpcblock PCBLOCK_NPC, true;
-	if (checkquest(5937,PLAYTIME) != 2)
-		npctalk "Mejai: Hello. Let's do our best today too.", "Mejai#E18_7", bc_self;
-	else {
+	switch( checkquest(5937,PLAYTIME) ) {
+	case -1:
+		break;
+	case 0:
+	case 1:
+		setpcblock PCBLOCK_NPC, true;
 		npctalk "Mejai: Come on! Today's work is done.", "Mejai#E18_7", bc_self;
 		sleep2 1000;
 		setpcblock PCBLOCK_NPC, false;
 		npctalk "Mejai: Go home and be faithful to your family. It's not like this is the only thing you have to do.", "Mejai#E18_7", bc_self;
 		end;
+	case 2:
+		setpcblock PCBLOCK_NPC, true;
+		npctalk "Mejai: Hello. Let's do our best today too.", "Mejai#E18_7", bc_self;
+		sleep2 1000;
+		setpcblock PCBLOCK_NPC, false;
+		break;
 	}
-	sleep2 1000;
-	setpcblock PCBLOCK_NPC, false;
 	switch( select( "I'm currently busy..", "Harvesting Half Flowers", "Delivering Half Flowers" ) ) {
 	case 1:
 		npctalk "Mejai: It seems you're busy with something? Please come see me when you're free.", "Mejai#E18_7", bc_self;