fix iterator after map::erase().
authorRobin Gareus <robin@gareus.org>
Wed, 23 Sep 2015 20:23:43 +0000 (22:23 +0200)
committerRobin Gareus <robin@gareus.org>
Wed, 23 Sep 2015 20:26:44 +0000 (22:26 +0200)
commitfedec84d3b703ebc76281621368a10e3637ebb81
tree30c2c7c52c7cb06f73fdd7d84e9266fc3d95879a
parentccf558f482afbe593f5ffd04456fa9e8bbb47168
fix iterator after map::erase().

The iterator referring to the removed element is invalidated.
Other iterators remain valid.
libs/ardour/session_state.cc