avcodec/g729postfilter.h: Include acelp_pitch_delay.h

Needed for PITCH_DELAY_MAX.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/g729postfilter.c

@@ -23,7 +23,6 @@
 
 #include "avcodec.h"
 #include "g729.h"
-#include "acelp_pitch_delay.h"
 #include "g729postfilter.h"
 #include "celp_math.h"
 #include "acelp_filters.h"

libavcodec/g729postfilter.h

@@ -22,6 +22,7 @@
 #define AVCODEC_G729POSTFILTER_H
 
 #include <stdint.h>
+#include "acelp_pitch_delay.h"
 #include "audiodsp.h"
 
 /**