Fix #6019: imgconverter: Including multipage PDF fails

[tk0miya]

Feature or Bugfix

• Bugfix

Purpose

• refs: Including multipage pdf via imgconverter fails #6019

[codecov]

Codecov Report

Merging #6071 into 1.8 will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##              1.8    #6071      +/-   ##
==========================================
+ Coverage   82.13%   82.14%   +<.01%     
==========================================
  Files         301      307       +6     
  Lines       40294    40632     +338     
  Branches     6225     6278      +53     
==========================================
+ Hits        33096    33376     +280     
- Misses       5819     5871      +52     
- Partials     1379     1385       +6

Impacted Files	Coverage Δ
sphinx/ext/imgconverter.py	56.66% <100%> (+2.56%)	⬆️
sphinx/make_mode.py	0% <0%> (ø)
sphinx/search/__init__.py	96.9% <0%> (ø)
sphinx/quickstart.py	0% <0%> (ø)
sphinx/errors.py	80% <0%> (ø)
sphinx/__init__.py	60% <0%> (ø)
sphinx/apidoc.py	0% <0%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 89c3c4a...4adcb40. Read the comment docs.

[codecov]

Codecov Report

Merging #6071 into 1.8 will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##              1.8    #6071      +/-   ##
==========================================
+ Coverage   82.13%   82.14%   +<.01%     
==========================================
  Files         301      307       +6     
  Lines       40294    40632     +338     
  Branches     6225     6278      +53     
==========================================
+ Hits        33096    33376     +280     
- Misses       5819     5871      +52     
- Partials     1379     1385       +6

Impacted Files	Coverage Δ
sphinx/ext/imgconverter.py	56.66% <100%> (+2.56%)	⬆️
sphinx/make_mode.py	0% <0%> (ø)
sphinx/search/__init__.py	96.9% <0%> (ø)
sphinx/quickstart.py	0% <0%> (ø)
sphinx/errors.py	80% <0%> (ø)
sphinx/__init__.py	60% <0%> (ø)
sphinx/apidoc.py	0% <0%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 89c3c4a...4adcb40. Read the comment docs.