custom-build: corrected syntax to dereference HAVE_UNWIND_H properly
custom-build: corrected syntax to dereference HAVE_UNWIND_H properly

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