Switch to side-by-side view

--- a/src/utils/conftree.cpp
+++ b/src/utils/conftree.cpp
@@ -552,7 +552,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
-
+#include <string.h>
 #include <sstream>
 #include <iostream>
 #include <list>