[gnome-commander] Simplify the get_child method of GnomeCmdPlainPath class using g_build_path

[Uwe Scholz <uwescholz src gnome org>]

commit f3bb67e4a0d6fe80a91e34422d4bdbf8fdb12d2e
Author: Uwe Scholz <u scholz83 gmx de>
Date:   Thu Jan 6 21:08:35 2022 +0100

    Simplify the get_child method of GnomeCmdPlainPath class using g_build_path

 src/gnome-cmd-plain-path.cc | 21 +++------------------
 1 file changed, 3 insertions(+), 18 deletions(-)
---
diff --git a/src/gnome-cmd-plain-path.cc b/src/gnome-cmd-plain-path.cc
index 3d9a70f6..c77a7dd2 100644
--- a/src/gnome-cmd-plain-path.cc
+++ b/src/gnome-cmd-plain-path.cc
@@ -1,4 +1,4 @@
-/** 
+/**
  * @file gnome-cmd-plain-path.cc
  * @copyright (C) 2001-2006 Marcus Bjurman\n
  * @copyright (C) 2007-2012 Piotr Eljasiak\n
@@ -55,23 +55,8 @@ GnomeCmdPath *GnomeCmdPlainPath::get_parent()
 GnomeCmdPath *GnomeCmdPlainPath::get_child(const gchar *child)
 {
     g_return_val_if_fail(child != nullptr, nullptr);
-
-    auto fullPath = *path == '/'
-                        ? *child != '/' && strlen(path) > 1
-                            ? g_strconcat(path, G_DIR_SEPARATOR_S, child, nullptr)
-                            : g_strconcat(path, 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);
-
-    auto childGFile = g_file_new_for_path(fullPath);
+    auto fullPath = g_build_path(G_DIR_SEPARATOR_S, path && path[0] != '\0' ? path : G_DIR_SEPARATOR_S, 
child, nullptr);
+    auto child_path = new GnomeCmdPlainPath(fullPath);
     g_free (fullPath);
-
-    gchar *pathString = g_file_get_path(childGFile);
-    g_object_unref(childGFile);
-
-    GnomeCmdPath *child_path = new GnomeCmdPlainPath(pathString);
-    g_free (pathString);
-
     return child_path;
 }