ProcessList: delay tree rebuild until panel rebuild

Author: tanriol

ProcessList.c

@@ -492,7 +492,4 @@ void ProcessList_scan(ProcessList* this, bool pauseProcessUpdate) {
 
    // Set UID column width based on max UID.
    Process_setUidColumnWidth(maxUid);
-
-   if (this->settings->ss->treeView)
-      ProcessList_buildTree(this);
 }

ProcessList.h

@@ -44,7 +44,8 @@ typedef struct ProcessList_ {
    const Settings* settings;
 
    Vector* processes;         /* all known processes; sort order can vary and differ from display order */
-   Vector* displayList;       /* process tree flattened in display order (borrowed) */
+   Vector* displayList;       /* process tree flattened in display order (borrowed);
+                                 updated in ProcessList_updateDisplayList when rebuilding panel */
    Hashtable* processTable;   /* fast known process lookup by PID */
    UsersTable* usersTable;