lavd/avdevice: remove av_ prefix from private function

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

libavdevice/avdevice.c

@@ -77,7 +77,7 @@ const char * avdevice_license(void)
     return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
 }
 
-static void *av_device_next(void *prev, int output,
+static void *device_next(void *prev, int output,
                          AVClassCategory c1, AVClassCategory c2)
 {
     const AVClass *pc;
@@ -101,25 +101,25 @@ static void *av_device_next(void *prev, int output,
 
 AVInputFormat *av_input_audio_device_next(AVInputFormat  *d)
 {
-    return av_device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT,
+    return device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT,
                        AV_CLASS_CATEGORY_DEVICE_INPUT);
 }
 
 AVInputFormat *av_input_video_device_next(AVInputFormat  *d)
 {
-    return av_device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT,
+    return device_next(d, 0, AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT,
                        AV_CLASS_CATEGORY_DEVICE_INPUT);
 }
 
 AVOutputFormat *av_output_audio_device_next(AVOutputFormat *d)
 {
-    return av_device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
+    return device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
                        AV_CLASS_CATEGORY_DEVICE_OUTPUT);
 }
 
 AVOutputFormat *av_output_video_device_next(AVOutputFormat *d)
 {
-    return av_device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
+    return device_next(d, 1, AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
                        AV_CLASS_CATEGORY_DEVICE_OUTPUT);
 }