Fix stuck connection block when template load fails.

Session::new_route_from_template() unconditionally calls
IO::disable_connecting(), and needs to be reverted likewise
(no RAII here).

1 files changed, 7 insertions, 1 deletions

diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index f5920f96e4..6fd6a9474c 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -3451,6 +3451,11 @@ Session::new_route_from_template (uint32_t how_many, PresentationInfo::order_t i
 			goto out;
 		}
 
+		catch (...) {
+			IO::enable_connecting ();
+			throw;
+		}
+
 		--how_many;
 	}
 
@@ -3462,9 +3467,10 @@ Session::new_route_from_template (uint32_t how_many, PresentationInfo::order_t i
 		} else {
 			add_routes (ret, true, true, false, insert_at);
 		}
-		IO::enable_connecting ();
 	}
 
+	IO::enable_connecting ();
+
 	return ret;
 }