aacdec: fix typo in scalefactor clipping check

libavcodec/aacdec.c

@@ -820,7 +820,7 @@ static int decode_scalefactors(AACContext *ac, float sf[120], GetBitContext *gb,
                     else
                         offset[1] += get_vlc2(gb, vlc_scalefactors.table, 7, 3) - 60;
                     clipped_offset = av_clip(offset[1], -100, 155);
-                    if (offset[2] != clipped_offset) {
+                    if (offset[1] != clipped_offset) {
                         av_log_ask_for_sample(ac->avctx, "Noise gain clipped "
                                 "(%d -> %d).\nIf you heard an audible "
                                 "artifact, there may be a bug in the decoder. ",