fix a crash in c64 search plugin, bump version

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
# On branch master
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
#	modified:   Makefile
#	modified:   debian/changelog
#	modified:   main.cpp
#	modified:   plugins/search/search_plugin_c64org.h
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#	dump.wav
#	msid
#	plugins/audio/libmsid_pulse.so
#	plugins/audio/libmsid_wav.so
#	plugins/search/libmsid_c64org.so
