avcodec: Fix libdcadec include dir

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

configure

@@ -4925,7 +4925,7 @@ enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
-enabled libdcadec         && require libdcadec dca_context.h dcadec_context_create -ldcadec
+enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"

libavcodec/libdcadec.c

@@ -19,7 +19,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <dca_context.h>
+#include <libdcadec/dca_context.h>
 
 #include "libavutil/avassert.h"
 #include "libavutil/channel_layout.h"