ProjectExplorer: Use setters in ProjectExplorer::Node

Instead of constructor arguments. This makes it clearer on the
user side which value is actually changed.

Change-Id: I63ae8cd139a49700996c8874098111aad89ace22
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/qbsprojectmanager/qbsnodes.cpp

@@ -237,8 +237,10 @@ static bool supportsNodeAction(ProjectAction action, const Node *node)
 QbsFileNode::QbsFileNode(const Utils::FileName &filePath,
                          const ProjectExplorer::FileType fileType,
                          int line) :
-    ProjectExplorer::FileNode(filePath, fileType, line, QByteArray{})
-{}
+    ProjectExplorer::FileNode(filePath, fileType)
+{
+    setLine(line);
+}
 
 QString QbsFileNode::displayName() const
 {