avcodec: Fix `make checkheaders`

libavcodec/Makefile

@@ -908,7 +908,6 @@ SKIPHEADERS                            += %_tablegen.h                  \
                                           %_tables.h                    \
                                           aac_tablegen_decl.h           \
                                           fft-internal.h                \
-                                          libutvideo.h                  \
                                           old_codec_ids.h               \
                                           tableprint.h                  \
                                           tableprint_vlc.h              \
@@ -918,6 +917,7 @@ SKIPHEADERS-$(CONFIG_D3D11VA)          += d3d11va.h dxva2_internal.h
 SKIPHEADERS-$(CONFIG_DXVA2)            += dxva2.h dxva2_internal.h
 SKIPHEADERS-$(CONFIG_LIBSCHROEDINGER)  += libschroedinger.h
 SKIPHEADERS-$(CONFIG_LIBUTVIDEO)       += libutvideo.h
+SKIPHEADERS-$(CONFIG_LIBWEBP_ENCODER)  += libwebpenc_common.h
 SKIPHEADERS-$(CONFIG_QSV)              += qsv.h qsv_internal.h
 SKIPHEADERS-$(CONFIG_QSVDEC)           += qsvdec.h
 SKIPHEADERS-$(CONFIG_QSVENC)           += qsvenc.h

libavcodec/aacenc_is.h

@@ -28,6 +28,8 @@
 #ifndef AVCODEC_AACENC_IS_H
 #define AVCODEC_AACENC_IS_H
 
+#include "aacenc.h"
+
 /** Frequency in Hz for lower limit of intensity stereo **/
 #define INT_STEREO_LOW_LIMIT 6100
 

libavcodec/aacenc_tns.h

@@ -28,7 +28,7 @@
 #ifndef AVCODEC_AACENC_TNS_H
 #define AVCODEC_AACENC_TNS_H
 
-#include "aac.h"
+#include "aacenc.h"
 
 /** Frequency in Hz for lower limit of TNS **/
 #define TNS_LOW_LIMIT 2150