Fix bug #338666: "Kalzium crashes when selecting >File >Export Data..."
Review Request #120219 - Created Sept. 15, 2014 and submitted
Problem is easy to spot with valgrind:
The private ExportDialog *m_exportDialog is not explicitely initialized
with 0, so later calling "if (!m_exportDialog)" may fail.
This accidentally slipped in with a header cleanup (commit d36687d50...)
Easy fix: initialize the pointer with 0 just like all the others.
- bug did not appear any more
(all on KDE 4.14.0)