Wrong constant used in default threshold value calculation for

JPEG-LS lossy mode with < 128 colours.

Patch by Mathieu Malaterre (mail = gmailify("mathieu.malaterre"))

Originally committed as revision 14517 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/jpegls.c

@@ -81,7 +81,7 @@ void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all){
         if(s->T2==0     || reset_all)
             s->T2= iso_clip(FFMAX(3, basic_t2/factor + 5*s->near), s->T1, s->maxval);
         if(s->T3==0     || reset_all)
-            s->T3= iso_clip(FFMAX(4, basic_t3/factor + 6*s->near), s->T2, s->maxval);
+            s->T3= iso_clip(FFMAX(4, basic_t3/factor + 7*s->near), s->T2, s->maxval);
     }
 
     if(s->reset==0  || reset_all) s->reset= 64;