Removed some unnecessary assertions

- Follow-up to 81e0257

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

3 files changed, 16 insertions, 9 deletions

diff --git a/src/map/homunculus.c b/src/map/homunculus.c
index 2490bc659..8d529ea01 100644
--- a/src/map/homunculus.c
+++ b/src/map/homunculus.c
@@ -49,10 +49,9 @@ struct homunculus_interface *homun;
 
 //Returns the viewdata for homunculus
 struct view_data* homunculus_get_viewdata(int class_) {
-	Assert_retr(NULL, class_ >= HM_CLASS_BASE && class_ - HM_CLASS_BASE < MAX_HOMUNCULUS_CLASS);
-	if (homdb_checkid(class_))
-		return &homun->dbs->viewdb[class_-HM_CLASS_BASE];
-	return NULL;
+	Assert_retr(NULL, homdb_checkid(class_));
+
+	return &homun->dbs->viewdb[class_-HM_CLASS_BASE];
 }
 
 enum homun_type homunculus_class2type(int class_) {
@@ -127,7 +126,6 @@ int homunculus_dead(struct homun_data *hd) {
 
 	nullpo_retr(3, hd);
 	sd = hd->master;
-	nullpo_retr(3, sd);
 	clif->emotion(&hd->bl, E_WAH);
 
 	//Delete timers when dead.
diff --git a/src/map/instance.c b/src/map/instance.c
index 0f6e475b2..1649c751e 100644
--- a/src/map/instance.c
+++ b/src/map/instance.c
@@ -151,16 +151,25 @@ int instance_create(int owner_id, const char *name, enum instance_owner_type typ
 	return i;
 }
 
-/*--------------------------------------
+/**
  * Add a map to the instance using src map "name"
- *--------------------------------------*/
+ *
+ * @param name Source map name.
+ * @param instance_id The destination instance ID.
+ * @param usebasename Whether to generate a standard instance map name (only used if map_name is not NULL).
+ * @param map_name    The name for the instanced map (may be NULL to generate a new one).
+ * @return The generated map's index.
+ * @retval -1 Map or instance not found.
+ * @retval -2 Duplicate map name.
+ * @retval -3 No more map indices available.
+ * @retval -4 Source map is already an instance.
+ **/
 int instance_add_map(const char *name, int instance_id, bool usebasename, const char *map_name) {
 	int16 m = map->mapname2mapid(name);
 	int i, im = -1;
 	size_t num_cell, size, j;
 
 	nullpo_retr(-1, name);
-	nullpo_retr(-1, map_name);
 
 	if( m < 0 )
 		return -1; // source map not found
diff --git a/src/map/intif.c b/src/map/intif.c
index 6819ad26c..9fe82302f 100644
--- a/src/map/intif.c
+++ b/src/map/intif.c
@@ -1007,7 +1007,7 @@ void mapif_parse_WisToGM(int fd)
 	char *message;
 
 	mes_len =  RFIFOW(fd,2) - 32;
-	Assert_retv(mes_len > 0 && mes_len > 32000);
+	Assert_retv(mes_len > 0 && mes_len < 32000);
 	message = (char *) (mes_len >= 255 ? (char *) aMalloc(mes_len) : mbuf);
 
 	permission = RFIFOL(fd,28);