avcodec/aacenc_tns: remove unreachable code branch

the condition being tested was the same as the stop condition for the containing loop,
so inside the loop it would always test positive

libavcodec/aacenc_tns.c

@@ -181,7 +181,7 @@ void ff_aac_search_for_tns(AACEncContext *s, SingleChannelElement *sce)
 
     for (w = 0; w < sce->ics.num_windows; w++) {
         float en[2] = {0.0f, 0.0f};
-        int oc_start = 0, os_start = 0;
+        int oc_start = 0;
         int coef_start = sce->ics.swb_offset[sfb_start];
 
         for (g = sfb_start; g < sce->ics.num_swb && g <= sfb_end; g++) {
@@ -202,12 +202,11 @@ void ff_aac_search_for_tns(AACEncContext *s, SingleChannelElement *sce)
         tns->n_filt[w] = is8 ? 1 : order != TNS_MAX_ORDER ? 2 : 3;
         for (g = 0; g < tns->n_filt[w]; g++) {
             tns->direction[w][g] = slant != 2 ? slant : en[g] < en[!g];
-            tns->order[w][g] = g < tns->n_filt[w] ? order/tns->n_filt[w] : order - oc_start;
+            tns->order[w][g] = order/tns->n_filt[w];
-            tns->length[w][g] = g < tns->n_filt[w] ? sfb_len/tns->n_filt[w] : sfb_len - os_start;
+            tns->length[w][g] = sfb_len/tns->n_filt[w];
             quantize_coefs(&coefs[oc_start], tns->coef_idx[w][g], tns->coef[w][g],
                             tns->order[w][g], c_bits);
             oc_start += tns->order[w][g];
-            os_start += tns->length[w][g];
         }
         count++;
     }