Even when we don't have any audio players audio_player.cpp is still required...

Even when we don't have any audio players audio_player.cpp is still required in order to register the fact that there are no audio players.

Originally committed to SVN as r3098.

aegisub/src/Makefile.am

@@ -30,12 +30,10 @@ if BUILD_DARWIN
 aegisub_2_1_LDFLAGS += -L/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries
 endif
 
-if FOUND_AUDIO_PLAYER
 noinst_LIBRARIES += libaudio_player.a
 libaudio_player_a_SOURCES = audio_player.cpp
 libaudio_player_a_CPPFLAGS = @ALSA_CFLAGS@ @PORTAUDIO_CFLAGS@ @LIBPULSE_CFLAGS@ @OPENAL_CFLAGS@
 aegisub_2_1_LDADD += libaudio_player.a
-endif
 
 if HAVE_ALSA
 noinst_LIBRARIES += libaudio_alsa.a