fixed code style and added one more check to bps_tree
fixed code style and added one more check to bps_tree

nvoron23/tarantool,mejedi/tarantool,condor-the-bird/tarantool,dkorolev/tarantool,KlonD90/tarantool,condor-the-bird/tarantool,nvoron23/tarantool,mejedi/tarantool,condor-the-bird/tarantool,nvoron23/tarantool,Sannis/tarantool,ocelot-inc/tarantool,rtsisyk/tarantool,rtsisyk/tarantool,nvoron23/tarantool,Sannis/tarantool,vasilenkomike/tarantool,dkorolev/tarantool,vasilenkomike/tarantool,vasilenkomike/tarantool,ocelot-inc/tarantool,nvoron23/tarantool,mejedi/tarantool,mejedi/tarantool,condor-the-bird/tarantool,vasilenkomike/tarantool,dkorolev/tarantool,guard163/tarantool,Sannis/tarantool,KlonD90/tarantool,guard163/tarantool,KlonD90/tarantool,rtsisyk/tarantool,Sannis/tarantool,KlonD90/tarantool,rtsisyk/tarantool,ocelot-inc/tarantool,dkorolev/tarantool,Sannis/tarantool,guard163/tarantool,vasilenkomike/tarantool,guard163/tarantool,nvoron23/tarantool,condor-the-bird/tarantool,KlonD90/tarantool,ocelot-inc/tarantool,dkorolev/tarantool,guard163/tarantool