fixing thread safety, this may cause alignment problms (if it does than the...

fixing thread safety, this may cause alignment problms (if it does than the stuff should be moved to MpegEncContext)

Originally committed as revision 2124 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/i386/mpegvideo_mmx_template.c

@@ -38,7 +38,9 @@ static int RENAME(dct_quantize)(MpegEncContext *s,
 {
     int level=0, last_non_zero_p1, q; //=0 is cuz gcc says uninitalized ...
     const uint16_t *qmat, *bias;
-    static __align8 int16_t temp_block[64];
+    __align8 int16_t temp_block[64];
+    
+    assert((7&(int)(&temp_block[0])) == 0); //did gcc align it correctly?
 
     //s->fdct (block);
     ff_fdct_mmx (block); //cant be anything else ...