From a68a0b1ccbac36f65198c0d17ebd9d0e5bf54f08 Mon Sep 17 00:00:00 2001
From: Julian Smith <jules@op59.net>
Date: Sun, 5 Sep 2021 15:53:21 +0100
Subject: [PATCH] simgear/props/props.cxx: fixed deadlock in
 SGPropertyNode::addChildren().

Was causing fatal "Resource deadlock avoided" error with crj700.
---
 simgear/props/props.cxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/simgear/props/props.cxx b/simgear/props/props.cxx
index 8b42ca6f..a1a00634 100755
--- a/simgear/props/props.cxx
+++ b/simgear/props/props.cxx
@@ -282,7 +282,7 @@ struct SGPropertyLock
                     << "\n";
             ret = default_;
         }
-        std::cerr << __FILE__ << ":" << __LINE__ << ":"
+        if (0) std::cerr << __FILE__ << ":" << __LINE__ << ":"
                 << " name=" << name
                 << " value=" << (value ? value : "<unset>")
                 << " returning: " << ret
@@ -2480,7 +2480,7 @@ SGPropertyNode::addChildren( const std::string& name,
       SGPropertyNode_ptr node;
       node = new SGPropertyNode(name, index, this);
       SGPropertyNodeImpl::appendNode(exclusive, *this, node);
-      fireChildAdded(node);
+      SGPropertyNodeImpl::fireChildAdded(exclusive, *this, this /*parent*/, node);
       nodes.push_back(node);
     }
   }