fixing leaking tooltip string

Manually created version of PR #211

diff --git a/gtk2_ardour/mixer_strip.cc b/gtk2_ardour/mixer_strip.cc
index d0c30c9f1a6c63c28d29799997033ccede346716..7e8b7e44e48e260fafe0704ce4c4ed5a457f0b90 100644 (file)
--- a/gtk2_ardour/mixer_strip.cc
+++ b/gtk2_ardour/mixer_strip.cc
@@ -1355,6 +1355,8 @@ MixerStrip::update_io_button (boost::shared_ptr<ARDOUR::Route> route, Width widt
                set_tooltip (&output_button, tooltip_cstr);
        }
 
+       delete [] tooltip_cstr;
+
        if (each_io_has_one_connection) {
                if (total_connection_count == ardour_connection_count) {
                        // all connections are to the same track in ardour