courier-unicode: remove pure virtual functions in the C++ classes.

Callbacks from the C library can get invoked from the base class's
destructor.

Bump shared library version.

1 files changed, 15 insertions, 0 deletions

diff --git a/unicode/unicodecpp.C b/unicode/unicodecpp.C
index 485f05d..2996c54 100644
--- a/unicode/unicodecpp.C
+++ b/unicode/unicodecpp.C
@@ -295,6 +295,11 @@ unicode::linebreak_callback_base::~linebreak_callback_base()
 	finish();
 }
 
+int unicode::linebreak_callback_base::callback(int ignore)
+{
+	return 0;
+}
+
 unicode::linebreak_callback_base
 &unicode::linebreak_callback_base::operator<<(unicode_char uc)
 {
@@ -345,6 +350,11 @@ unicode::linebreakc_callback_base::~linebreakc_callback_base()
 	finish();
 }
 
+int unicode::linebreakc_callback_base::callback(int dummy1, unicode_char dummy2)
+{
+	return 0;
+}
+
 void unicode::linebreakc_callback_base::set_opts(int optsArg)
 {
 	opts=optsArg;
@@ -403,6 +413,11 @@ unicode::wordbreak_callback_base::~wordbreak_callback_base()
 	finish();
 }
 
+int unicode::wordbreak_callback_base::callback(bool ignore)
+{
+	return 0;
+}
+
 unicode::wordbreak_callback_base
 &unicode::wordbreak_callback_base::operator<<(unicode_char uc)
 {