Fix the XRefWrapper implementation, in the src/core/editor/pdf_editor.js file

[Snuffleupagus]

When comparing this code with the full XRef class it doesn't seem to be entirely correctly implemented, since the fetch method is basically doing what the fetchIfRef method is intended to do.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 40.00000% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.40%. Comparing base (25c7d9e) to head (05de3c8).
⚠️ Report is 12 commits behind head on master.

Files with missing lines	Patch %	Lines
src/core/editor/pdf_editor.js	40.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #21319      +/-   ##
==========================================
+ Coverage   81.38%   81.40%   +0.02%     
==========================================
  Files         256      256              
  Lines       65328    65338      +10     
==========================================
+ Hits        53165    53189      +24     
+ Misses      12163    12149      -14     

Flag	Coverage Δ
fonttest	9.11% <ø> (+<0.01%)	⬆️
integrationtest	66.98% <0.00%> (+0.02%)	⬆️
unittest	56.85% <40.00%> (-0.01%)	⬇️
unittestcli	56.05% <40.00%> (+<0.01%)	⬆️

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[Snuffleupagus]

/botio browsertest

[moz-tools-bot]

From: Bot.io (Windows)

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Received

Command cmd_browsertest from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.193.163.58:8877/1721915db3e1f81/output.txt

[moz-tools-bot]

From: Bot.io (Linux m4)

---

Received

Command cmd_browsertest from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.241.84.105:8877/407f1448a6840c5/output.txt

[moz-tools-bot]

From: Bot.io (Linux m4)

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Success

Full output at http://54.241.84.105:8877/407f1448a6840c5/output.txt

Total script time: 18.23 mins

• Regression tests: Passed

[moz-tools-bot]

From: Bot.io (Windows)

---

Success

Full output at http://54.193.163.58:8877/1721915db3e1f81/output.txt

Total script time: 25.06 mins

• Regression tests: Passed

[timvandermeij]

Looks good; thanks!