flv: Name an enum and use its type

libavformat/flv.h

@@ -51,7 +51,7 @@ enum {
     FLV_HEADER_FLAG_HASAUDIO = 4,
 };
 
-enum {
+enum FlvTagType {
     FLV_TAG_TYPE_AUDIO = 0x08,
     FLV_TAG_TYPE_VIDEO = 0x09,
     FLV_TAG_TYPE_META  = 0x12,

libavformat/flvdec.c

@@ -737,7 +737,8 @@ skip:
 static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
 {
     FLVContext *flv = s->priv_data;
-    int ret, i, type, size, flags, is_audio;
+    int ret, i, size, flags, is_audio;
+    enum FlvTagType type;
     int64_t next, pos;
     int64_t dts, pts = AV_NOPTS_VALUE;
     int sample_rate = 0, channels = 0;