tools/target_dem_fuzzer: Set format independent of c

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

tools/target_dem_fuzzer.c

@@ -104,14 +104,14 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     int seekable = 0;
     int ret;
     AVInputFormat *fmt = NULL;
-
-    if (!c) {
 #ifdef FFMPEG_DEMUXER
 #define DEMUXER_SYMBOL0(DEMUXER) ff_##DEMUXER##_demuxer
 #define DEMUXER_SYMBOL(DEMUXER) DEMUXER_SYMBOL0(DEMUXER)
-        extern AVInputFormat DEMUXER_SYMBOL(FFMPEG_DEMUXER);
-        fmt = &DEMUXER_SYMBOL(FFMPEG_DEMUXER);
+    extern AVInputFormat DEMUXER_SYMBOL(FFMPEG_DEMUXER);
+    fmt = &DEMUXER_SYMBOL(FFMPEG_DEMUXER);
 #endif
+
+    if (!c) {
         av_register_all();
         avcodec_register_all();
         av_log_set_level(AV_LOG_PANIC);