Mackie Control: Fix crash in multi-surface setup when add/remove tracks.

diff --git a/libs/surfaces/mackie/surface.cc b/libs/surfaces/mackie/surface.cc
index acc997e652f2d2bad88d16ce0ab9651669290c64..942fb809a938f7e25749c664b509bee2a6302c03 100644 (file)
--- a/libs/surfaces/mackie/surface.cc
+++ b/libs/surfaces/mackie/surface.cc
@@ -369,7 +369,9 @@ Surface::init_strips (uint32_t n)
 void
 Surface::master_monitor_may_have_changed ()
 {
-       setup_master ();
+       if (_number == _mcp.device_info().master_position()) {
+               setup_master ();
+       }
 }
 
 void