aacdec: Fix PS in ADTS.

Fixes File1.aac and Bug 80.

libavcodec/aacdec.c

@@ -2085,7 +2085,8 @@ static int parse_adts_frame_header(AACContext *ac, GetBitContext *gb)
             ac->m4ac.chan_config = hdr_info.chan_config;
             if (set_default_channel_config(ac->avctx, new_che_pos, hdr_info.chan_config))
                 return -7;
-            if (output_configure(ac, ac->che_pos, new_che_pos, hdr_info.chan_config, OC_TRIAL_FRAME))
+            if (output_configure(ac, ac->che_pos, new_che_pos, hdr_info.chan_config,
+                                 FFMAX(ac->output_configured, OC_TRIAL_FRAME)))
                 return -7;
         } else if (ac->output_configured != OC_LOCKED) {
             ac->m4ac.chan_config = 0;