Crash on graphical signature (PAdES) using the podofo-vanilla branch

[M0Rf30]

Using the podofo-vanilla branch a crash will occur during the PAdES graphical signature process (without checking the box to append the signature image)

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007fbe441740b0, pid=2393655, tid=2393968
#
# JRE version: OpenJDK Runtime Environment (17.0.4+8) (build 17.0.4+8-nixos)
# Java VM: OpenJDK 64-Bit Server VM (17.0.4+8-nixos, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# C  [libpodofo.so.0.9.8+0x14e0b0]  PoDoFo::PdfPagesTree::GetTotalNumberOfPages() const+0x0
#

Originally posted by @rnhmjoj in #8 (comment)

[resoli]

Same here:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007ff7522f1ef4, pid=57361, tid=57415
#
# JRE version: OpenJDK Runtime Environment (11.0.17+8) (build 11.0.17+8-post-Ubuntu-1ubuntu222.04)
# Java VM: OpenJDK 64-Bit Server VM (11.0.17+8-post-Ubuntu-1ubuntu222.04, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-amd64)
# Problematic frame:
# C  [libpodofo.so.0.9.7+0xf0ef4]  PoDoFo::PdfPagesTree::GetTotalNumberOfPages() const+0x4