mpegaudio decoder no longer forgets to decoder last audio frame

Originally committed as revision 2244 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/ffmpeg.regression.ref

@@ -57,5 +57,5 @@ stddev: 17.98 bytes:7602176
 57ea0821ec4377e96647adc22717a4ba *./data/out.yuv
 stddev:  8.19 bytes:7602176
 21f8ff9f1daacd9133683bb4ea0f50a4 *./data/a-mp2.mp2
-116d1290ba1b4eb98fdee52e423417b1 *./data/out.wav
+624d9789f3ac193bbae4af3bd8cb02b7 *./data/out.wav
 d056da679e6d6682812fffb28a7f0db6 *./data/a-ac3.rm

tests/rotozoom.regression.ref

@@ -57,5 +57,5 @@ bee27a404ab6a1b7ab1d3551eb4f1877 *./data/a-flv.flv
 86da6ee46d2df190b4a0d72523b14a25 *./data/out.yuv
 stddev:  5.29 bytes:7602176
 21f8ff9f1daacd9133683bb4ea0f50a4 *./data/a-mp2.mp2
-116d1290ba1b4eb98fdee52e423417b1 *./data/out.wav
+624d9789f3ac193bbae4af3bd8cb02b7 *./data/out.wav
 d056da679e6d6682812fffb28a7f0db6 *./data/a-ac3.rm