[Bf-blender-cvs] [e91dd645a94] master: Fix concern: lookup could fail.

[Jeroen Bakker]

Commit: e91dd645a94d63c62c8a63d0da0ba145f48da289
Author: Jeroen Bakker
Date:   Wed Mar 17 09:18:39 2021 +0100
Branches: master
https://developer.blender.org/rBe91dd645a94d63c62c8a63d0da0ba145f48da289

Fix concern: lookup could fail.

Concern raised on {93e2491ee724}.

===================================================================

M	source/blender/compositor/intern/COM_NodeOperationBuilder.cc

===================================================================

diff --git a/source/blender/compositor/intern/COM_NodeOperationBuilder.cc b/source/blender/compositor/intern/COM_NodeOperationBuilder.cc
index 306ca1bd8dd..b6da1e128c5 100644
--- a/source/blender/compositor/intern/COM_NodeOperationBuilder.cc
+++ b/source/blender/compositor/intern/COM_NodeOperationBuilder.cc
@@ -77,7 +77,7 @@ void NodeOperationBuilder::convertToOperations(ExecutionSystem *system)
     NodeOutput *from = link.from;
     NodeInput *to = link.to;
 
-    NodeOperationOutput *op_from = m_output_map.lookup(from);
+    NodeOperationOutput *op_from = m_output_map.lookup_default(from, nullptr);
 
     const blender::Span<NodeOperationInput *> op_to_list = inverse_input_map.lookup(to);
     if (!op_from || op_to_list.is_empty()) {