[gnome-commander] Fix for finding the child path

[Uwe Scholz <uwescholz src gnome org>]

commit 30d4782f324f22ea861c7217286b3118abce8540
Author: Uwe Scholz <u scholz83 gmx de>
Date:   Sun Apr 25 19:02:41 2021 +0200

    Fix for finding the child path
    
    Just check first letter of the child to be a backslash character
    
    and check if the length of the upper directory is longer then just 1 character (in the case of '/')

 src/gnome-cmd-plain-path.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/gnome-cmd-plain-path.cc b/src/gnome-cmd-plain-path.cc
index e0ebb4c5..1d320503 100644
--- a/src/gnome-cmd-plain-path.cc
+++ b/src/gnome-cmd-plain-path.cc
@@ -55,10 +55,10 @@ GnomeCmdPath *GnomeCmdPlainPath::get_parent()
 GnomeCmdPath *GnomeCmdPlainPath::get_child(const gchar *child)
 {
     auto fullPath = *path == '/'
-                        ? strchr (child, '/') == nullptr
+                        ? *child != '/' && strlen(path) > 1
                             ? g_strconcat(path, G_DIR_SEPARATOR_S, child, nullptr)
                             : g_strconcat(path, child, nullptr)
-                        : strchr (child, '/') == nullptr
+                        : *child != '/'
                             ? g_strconcat(G_DIR_SEPARATOR_S, path, G_DIR_SEPARATOR_S, child, nullptr)
                             : g_strconcat(G_DIR_SEPARATOR_S, path, child, nullptr);