* Added crash check for Ice Wall

- reduce mob_data->size variable to 1 bytes
- change from if-else to switch statements in buildin_strmobinfo

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/branches/stable@1020 54d463be-8e91-2dee-dedb-b68131a5f0ec

3 files changed, 33 insertions, 24 deletions

diff --git a/src/map/clif.c b/src/map/clif.c
index 288ac3b28..87aa1ff5e 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -3887,7 +3887,7 @@ int clif_clearchar_skillunit(struct skill_unit *unit,int fd)
 	WFIFOW(fd, 0)=0x120;
 	WFIFOL(fd, 2)=unit->bl.id;
 	WFIFOSET(fd,packet_len_table[0x120]);
-	if(unit->group->skill_id == WZ_ICEWALL)
+	if(unit->group && unit->group->skill_id == WZ_ICEWALL)
 		clif_set0192(fd,unit->bl.m,unit->bl.x,unit->bl.y,unit->val2);
 
 	return 0;
diff --git a/src/map/map.h b/src/map/map.h
index 565f68dbc..5944167ad 100644
--- a/src/map/map.h
+++ b/src/map/map.h
@@ -456,7 +456,7 @@ struct mob_data {
 	struct skill_unit_group skillunit[MAX_MOBSKILLUNITGROUP];
 	struct skill_unit_group_tickset skillunittick[MAX_SKILLUNITGROUPTICKSET];
 	char npc_event[50];
-	short size;
+	unsigned char size;
 	int owner;
 };
 struct pet_data {
diff --git a/src/map/script.c b/src/map/script.c
index 57e02ff9c..0b4374887 100644
--- a/src/map/script.c
+++ b/src/map/script.c
@@ -5550,37 +5550,46 @@ int buildin_strmobinfo(struct script_state *st)
 	int num=conv_num(st,& (st->stack->stack_data[st->start+2]));
 	int class_=conv_num(st,& (st->stack->stack_data[st->start+3]));
 
-	if(num<=0 || num>=8 || (class_>=0 && class_<=1000) || class_ >2000)
+	if((class_>=0 && class_<=1000) || class_ >2000)
 		return 0;
 
-	if(num==1) {
-		char *buf;
-		buf=aCallocA(24, 1);
-//		buf=mob_db[class_].name;
+	switch (num) {
+	case 1:
+		{
+			char *buf;
+			buf=aCallocA(24, 1);
+//			buf=mob_db[class_].name;
 // for string assignments you would need to go for c++ [Shinomori]
-		strcpy(buf,mob_db[class_].name);
-		push_str(st->stack,C_STR,buf);
-		return 0;
-	}
-	else if(num==2)	{
-		char *buf;
-		buf=aCallocA(24, 1);
-//		buf=mob_db[class_].jname;
+			strcpy(buf,mob_db[class_].name);
+			push_str(st->stack,C_STR,buf);
+			break;
+		}
+	case 2:
+		{
+			char *buf;
+			buf=aCallocA(24, 1);
+//			buf=mob_db[class_].jname;
 // for string assignments you would need to go for c++ [Shinomori]
-		strcpy(buf,mob_db[class_].jname);
-		push_str(st->stack,C_STR,buf);
-		return 0;
-	}
-	else if(num==3)
+			strcpy(buf,mob_db[class_].jname);
+			push_str(st->stack,C_STR,buf);
+			break;
+		}
+	case 3:
 		push_val(st->stack,C_INT,mob_db[class_].lv);
-	else if(num==4)
+		break;
+	case 4:
 		push_val(st->stack,C_INT,mob_db[class_].max_hp);
-	else if(num==5)
+		break;
+	case 5:
 		push_val(st->stack,C_INT,mob_db[class_].max_sp);
-	else if(num==6)
+		break;
+	case 6:
 		push_val(st->stack,C_INT,mob_db[class_].base_exp);
-	else if(num==7)
+		break;
+	case 7:
 		push_val(st->stack,C_INT,mob_db[class_].job_exp);
+		break;
+	}
 	return 0;
 }