Fix OpenAL build #618

Job	Run time
prepare_jobs	21s
build (angelscript)	37s
build (argtable2)	25s
build (bzip2)	38s
build (cjson)	29s
build (eigen3)	39s
build (enet)	27s
build (expat)	29s
build (jpeg)	43s
build (jsoncpp)	30s
build (kubridge)	26s
build (libbulletml)	24s
build (libconfuse)	42s
build (libdumb)	26s
build (libintrafont)	27s
build (libmad)	22s
build (libmikmod)	37s
build (libogg)	31s
build (libpspvram)	20s
build (libun7zip)	28s
build (libxmp)	42s
build (libxmp-lite)	37s
build (libyaml)	39s
build (lua)	23s
build (mbedtls)	28s
build (mini18n)	25s
build (openal)	49s
build (pocketpy)	58s
build (polarssl)	34s
build (pspgl)	29s
build (pspirkeyb)	26s
build (sqlite)	40s
build (squirrel)	43s
build (zlib)	21s
build_depends (curl)	1m 12s
build_depends (libpng freetype2)	40s
build_depends (libpng)	31s
build_depends (libvorbis)	28s
build_depends (libzip)	57s
build_depends (libpng minizip)	37s
build_depends (libpng freetype2 opentri)	56s
build_depends (libpng pixman)	51s
build_depends (sdl)	1m 0s
build_depends (libpng freetype2 sdl sdl-gfx)	1m 36s
build_depends (libpng sdl sdl-image)	1m 16s
build_depends (libvorbis sdl sdl-mixer)	1m 15s
build_depends (libpng freetype2 sdl sdl-ttf)	1m 22s
build_depends (sdl2)	1m 6s
build_depends (sdl2 sdl2-gfx)	1m 29s
build_depends (libpng sdl2 sdl2-image)	1m 15s
build_depends (libvorbis sdl2 sdl2-mixer)	1m 27s
build_depends (libpng freetype2 sdl2 sdl2-ttf)	1m 33s
build_depends (sdl smpeg)	1m 18s
build_depends (zziplib)	46s
create_release	0s
docker-layer	0s
	39m 50s

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