ProjectExplorer: Nodes: Rename member holding parentFolderNode pointer

Change-Id: I8c2abc5a3b258f1ec0b9d2b9582e0f4b41e11568
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/projectexplorer/projectnodes.cpp

@@ -106,7 +106,7 @@ ProjectNode *Node::parentProjectNode() const
   */
 FolderNode *Node::parentFolderNode() const
 {
-    return m_folderNode;
+    return m_parentFolderNode;
 }
 
 /*!
@@ -178,7 +178,7 @@ bool Node::sortByPath(Node *a, Node *b)
 
 void Node::setParentFolderNode(FolderNode *parentFolder)
 {
-    m_folderNode = parentFolder;
+    m_parentFolderNode = parentFolder;
 }
 
 /*!

src/plugins/projectexplorer/projectnodes.h

@@ -148,7 +148,7 @@ protected:
 
 private:
     ProjectNode *m_projectNode = nullptr;
-    FolderNode *m_folderNode = nullptr;
+    FolderNode *m_parentFolderNode = nullptr;
     Utils::FileName m_filePath;
     int m_line;
     const NodeType m_nodeType;