[gnome-screenshot] Revert "backend-shell: Use /tmp to save temporary file"

[Alexander Mikhaylenko <alexm src gnome org>]

commit 6b2da59dca63cc23d0a2400bf178c8d409e60aae
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Tue Dec 1 18:37:39 2020 +0500

    Revert "backend-shell: Use /tmp to save temporary file"
    
    This reverts commit a69f5eefb4855218f87262fd44de96903f7ca508.

 src/screenshot-backend-shell.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/src/screenshot-backend-shell.c b/src/screenshot-backend-shell.c
index 9c686d1..84c5ead 100644
--- a/src/screenshot-backend-shell.c
+++ b/src/screenshot-backend-shell.c
@@ -42,14 +42,13 @@ screenshot_backend_shell_get_pixbuf (ScreenshotBackend *backend,
                                      GdkRectangle      *rectangle)
 {
   g_autoptr(GError) error = NULL;
-  g_autofree gchar *tmp_dirname = NULL, *path = NULL, *filename = NULL, *tmpname = NULL;
+  g_autofree gchar *path = NULL, *filename = NULL, *tmpname = NULL;
   GdkPixbuf *screenshot = NULL;
   const gchar *method_name;
   GVariant *method_params;
   GDBusConnection *connection;
 
-  tmp_dirname = g_strdup_printf ("gnome-screenshot-%s", g_get_user_name ());
-  path = g_build_filename (g_get_tmp_dir (), tmp_dirname, NULL);
+  path = g_build_filename (g_get_user_cache_dir (), "gnome-screenshot", NULL);
   g_mkdir_with_parents (path, 0700);
 
   tmpname = g_strdup_printf ("scr-%d.png", g_random_int ());