don't set label property with a NULL value
in ev_annot_from_poppler_annot() function of
ev-poppler.c because otherwise a critical
message will be printed to the console.
Fixes #1814 (closed)
in ev_annot_from_poppler_annot() function of
ev-poppler.c because otherwise a critical
message will be printed to the console.
Fixes #1814 (closed)