[test] adapt stress graphics refs

Author: ferdymercury

test/stressGraphics.ref

@@ -14,7 +14,7 @@
         tlatex2      5442        80     13533        50     18430       700     12398       300      5469        80
         tlatex3      9253       100     14437       150     19851      2400     12199       900      9283       100
         tlatex4      8863        70     13705       100     24343      1100     23278      1700      8894        70
-        tlatex5     12971       100     14810        50     34063      2000     32033      1200     13070       150
+        tlatex5     13686       100     14880        50     34063      2000     32033      1200     13715       150
         kerning      7444       100     13593       100     83557      3000     38505      4000      7494       150
            itbf      5600       400     13302       400     16881       400     15063       800      5638       400
       tmathtext  14190539   4000000     12986       100     23076      9500     25987      3000  14190704   4000000

test/stressGraphics_zlibng.ref

@@ -14,7 +14,7 @@
         tlatex2      5488        80     13507       100     18439       700     12061       500      5502        80
         tlatex3      9154       100     14323       150     20441      2400     12143       900      9283       100
         tlatex4      8831        70     13705       100     24251      1100     23337      1700      8862        70
-        tlatex5     12967       100     14770        50     33842      2000     30348      1200     12970       150
+        tlatex5     13686       100     14840        50     33842      2000     32356      1200     13715       150
         kerning      7454       100     13557        50     83044      3000     37165      4100      7504       150
            itbf      5600       400     13302       300     16868       400     15083       800      5638       400
       tmathtext  14193187   4000000     12984       100     27112      9500     25080      3000  14193352   4000000