[fix] fixed an endian bug in mp4 vod.

Author: winshining

ngx_rtmp_mp4_module.c

@@ -202,8 +202,13 @@ typedef struct {
 } ngx_rtmp_mp4_ctx_t;
 
 
+#if (NGX_HAVE_LITTLE_ENDIAN)
 #define ngx_rtmp_mp4_make_tag(a, b, c, d)  \
     ((uint32_t)d << 24 | (uint32_t)c << 16 | (uint32_t)b << 8 | (uint32_t)a)
+#else
+#define ngx_rtmp_mp4_make_tag(a, b, c, d)  \
+    ((uint32_t)a << 24 | (uint32_t)b << 16 | (uint32_t)c << 8 | (uint32_t)d)
+#endif
 
 
 static ngx_inline uint32_t