lavf: postpone removing av_close_input_file().

It has been deprecated only recently.

libavformat/version.h

@@ -120,7 +120,7 @@
 #define FF_API_SET_PTS_INFO            (LIBAVFORMAT_VERSION_MAJOR < 54)
 #endif
 #ifndef FF_API_CLOSE_INPUT_FILE
-#define FF_API_CLOSE_INPUT_FILE        (LIBAVFORMAT_VERSION_MAJOR < 54)
+#define FF_API_CLOSE_INPUT_FILE        (LIBAVFORMAT_VERSION_MAJOR < 55)
 #endif
 
 #endif /* AVFORMAT_VERSION_H */