Use central method to check for engine where required
authorRobin Gareus <robin@gareus.org>
Tue, 27 Nov 2018 23:01:50 +0000 (00:01 +0100)
committerRobin Gareus <robin@gareus.org>
Tue, 27 Nov 2018 23:01:50 +0000 (00:01 +0100)
commitf150f6c074e09e99531f8e82c5972fa49e302374
treed78c5dfd2a63826b8ef274ec6336699f552bcdf8
parent415721fa5b48f3c3dc164ac60095c095c4e48ad0
Use central method to check for engine where required

These are generally places where tracks/busses are created or port
connections change.
gtk2_ardour/ardour_ui.cc
gtk2_ardour/editor_canvas.cc
gtk2_ardour/editor_drag.cc
gtk2_ardour/editor_ops.cc
gtk2_ardour/mixer_strip.cc
gtk2_ardour/processor_box.cc
gtk2_ardour/route_ui.cc
gtk2_ardour/sfdb_ui.cc