Adjust test/stressGraphics.ref

[ellert]

Test 37: TScatter with TPolyMarker test............................ OK
         PDF output......................................... 37 FAILED
         Result    = 22236
         Reference = 22560
         Error     = 324 (was 300)
         JPG output................................................ OK
         PNG output................................................ OK
         C file result............................................. OK

[dpiparo]

Thanks for this changes. Could you give some details about the problem you are trying to address?

[github-actions]

Test Results

    19 files      19 suites   3d 8h 29m 31s ⏱️
 2 805 tests  2 805 ✅ 0 💤 0 ❌
51 795 runs  51 795 ✅ 0 💤 0 ❌

Results for commit 8128680.

[couet]

On which machine to you see this issue ? i do not see it on my mac. I add @linev in the loop because he did the las chnages in stressGrpahics

[guitargeek]

@ellert, ping on this. Before we merge, could you please tell us here on which platform and architecture you saw this failure? Just for the record.