D16406: Fix build with poppler<0.64

[Antonio Rojas]

arojas created this revision.
arojas added reviewers: Calligra: 3.0, aacid.
Herald added a project: Calligra: 3.0.
Herald added a subscriber: Calligra-Devel-list.
arojas requested review of this revision.

REVISION SUMMARY
  Last commit broke build with poppler<0.64, where getNextChar doesn't accept a const char first argument.

TEST PLAN
  Builds with poppler as far back as 0.55

REPOSITORY
  R8 Calligra

REVISION DETAIL
  https://phabricator.kde.org/D16406

AFFECTED FILES
  filters/karbon/pdf/SvgOutputDev.cpp

To: arojas, #calligra:_3.0, aacid
Cc: Calligra-Devel-list, dcaliste, cochise, vandenoever
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