Fix libass linking that always need freetype

Author: jbkempf

modules/codec/Makefile.am

@@ -122,7 +122,7 @@ liblibass_plugin_la_SOURCES = codec/libass.c
 liblibass_plugin_la_CPPFLAGS = $(AM_CPPFLAGS) $(CPPFLAGS_libass)
 liblibass_plugin_la_CFLAGS = $(AM_CFLAGS) $(LIBASS_CFLAGS)
 liblibass_plugin_la_LDFLAGS = $(AM_LDFLAGS) -rpath '$(codecdir)'
-liblibass_plugin_la_LIBADD = $(LIBASS_LIBS) $(LIBS_libass)
+liblibass_plugin_la_LIBADD = $(LIBASS_LIBS) $(LIBS_libass) $(LIBS_freetype)
 EXTRA_LTLIBRARIES += liblibass_plugin.la
 codec_LTLIBRARIES += $(LTLIBlibass)