alignment.cpp: include stdlib.h (malloc and free)
alignment.cpp: include stdlib.h (malloc and free)

See https://ci.appveyor.com/project/starius/lua-npge/build/0.0.1.183-test/job/icxoykxeq5imgd6s

starius/lua-npge,npge/lua-npge,starius/lua-npge,starius/lua-npge,npge/lua-npge,npge/lua-npge