Jonathan Desrosiers bbfaa06ce8 Tests: Fix an incorrect variable name in PDF tests.
This causes a PHP error when running the test suite with PDF rendering supported.

Merges [49523] to the 4.7 branch.
See #50573, #48301.

git-svn-id: https://develop.svn.wordpress.org/branches/4.7@49526 602fd350-edb4-49c9-b593-d223f7449a82
2020-11-06 17:05:59 +00:00
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