Cleaned up property fetching

SchemeEditor.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 6.0.2, 2022-04-05T08:22:13. -->
+<!-- Written by QtCreator 6.0.2, 2022-04-08T00:30:41. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>

comdel/domain/comdelgenerator.cpp

@@ -396,11 +396,12 @@ optional<Pin> ComdelGenerator::loadPin(PinNode node)
 }
 
 int getIntProperty(DisplayItemNode &node, std::string property) {
-    for(auto prop: node.values) {
+    for(auto& prop: node.values) {
         if(prop.key.value == property) {
             return prop.value.asInt();
         }
     }
+    throw std::exception();
 }
 
 std::optional<Display> ComdelGenerator::loadDisplay(DisplayNode node)