avcodec/aacsbr: Replace a noise_facs_q check by an av_assert0

The replaced check should have become redundant
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/aacsbr.c

@@ -96,10 +96,7 @@ static void sbr_dequant(SpectralBandReplication *sbr, int id_aac)
                 float temp1 = exp2f(NOISE_FLOOR_OFFSET - sbr->data[0].noise_facs_q[e][k] + 1);
                 float temp2 = exp2f(12 - sbr->data[1].noise_facs_q[e][k]);
                 float fac;
-                if (temp1 > 1E20) {
-                    av_log(NULL, AV_LOG_ERROR, "envelope scalefactor overflow in dequant\n");
-                    temp1 = 1;
-                }
+                av_assert0(temp1 <= 1E20);
                 fac = temp1 / (1.0f + temp2);
                 sbr->data[0].noise_facs[e][k] = fac;
                 sbr->data[1].noise_facs[e][k] = fac * temp2;