gearbox: fix -Werror=parentheses

dlls/gearbox/ctf_gamerules.cpp

@@ -464,7 +464,7 @@ void CCTFMultiplay::PlayerSpawn(CBasePlayer *pPlayer)
 
 		addDefault = TRUE;
 
-		while (pWeaponEntity = UTIL_FindEntityByClassname(pWeaponEntity, "game_player_equip"))
+		while ((pWeaponEntity = UTIL_FindEntityByClassname(pWeaponEntity, "game_player_equip")))
 		{
 			pWeaponEntity->Touch(pPlayer);
 			addDefault = FALSE;

dlls/gearbox/geneworm.cpp

@@ -724,7 +724,7 @@ void CGeneWorm::DyingThink(void)
 			m_pBall = NULL;
 		}
 		CBaseEntity* entity = NULL;
-		while(entity = UTIL_FindEntityByClassname(entity, "monster_shocktrooper"))
+		while((entity = UTIL_FindEntityByClassname(entity, "monster_shocktrooper")))
 			entity->SUB_StartFadeOut();
 	}
 }