* Updated/revised description of instance-related script commands (bugreport:4880).

- Fixed 'instance_create' would return -4 (party already instancing) when the requested party was not found.
- 'instance_create' return value -2 now means 'party not found' rather than 'missing parameter'.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@14809 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/script.c

@@ -14360,11 +14360,11 @@ BUILDIN_FUNC(instance_create)
 	}
 	else if( res < 0 )
 	{
-		char *err;
+		const char *err;
 		switch(res)
 		{
 		case -3: err = "No free instances"; break;
-		case -2: err = "Missing parameter"; break;
+		case -2: err = "Invalid party ID"; break;
 		case -1: err = "Invalid type"; break;
 		default: err = "Unknown"; break;
 		}