[BUGFIX] fix #18936, #18937

[r3stl355]

Description

Fixes #18936 and #18937

Checklist

Essentials

• PR's title starts with a category (e.g. [BUGFIX], [MODEL], [TUTORIAL], [FEATURE], [DOC], etc)
• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage
• Code is well-documented

Changes

A single change in 'pdf_op.h' fixes both issues

Comments

For some reason I'm also getting some empty commits (5bf4895 & 12107ed) included in the PR but those don't appear in my local repository and should've been part of already merged PR. Please ignore those as they don't really do anything.

[mxnet-bot]

Hey @r3stl355 , Thanks for submitting the PR
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[r3stl355]

@mxnet-bot run ci [unix-cpu]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-cpu]

[szha]

@r3stl355 thanks for the fixes!