Fix Human Grunts dropping weapons again if the game is saved and loaded while the grunt is dying

Same as bc7d6e3c07

dlls/hgrunt.cpp

@@ -848,6 +848,8 @@ void CHGrunt::HandleAnimEvent( MonsterEvent_t *pEvent )
 	switch( pEvent->event )
 	{
 		case HGRUNT_AE_DROP_GUN:
+		{
+			if ( GetBodygroup( GUN_GROUP ) != GUN_NONE )
 			{
 				Vector vecGunPos;
 				Vector vecGunAngles;
@@ -872,6 +874,7 @@ void CHGrunt::HandleAnimEvent( MonsterEvent_t *pEvent )
 					DropItem( "ammo_ARgrenades", BodyTarget( pev->origin ), vecGunAngles );
 				}
 			}
+		}
 			break;
 		case HGRUNT_AE_RELOAD:
 			EMIT_SOUND( ENT( pev ), CHAN_WEAPON, "hgrunt/gr_reload1.wav", 1, ATTN_NORM );