[gthumb/gthumb-3-10] gthumb opens import tool if the import tool is already opened

[Paolo Bacchilega <paobac src gnome org>]

commit f67140743d933c2ea0e616f3402d490955eaf42a
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sun Nov 29 17:57:31 2020 +0100

    gthumb opens import tool if the import tool is already opened
    
    Fixes https://gitlab.gnome.org/GNOME/gthumb/-/issues/133

 gthumb/gth-application.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gthumb/gth-application.c b/gthumb/gth-application.c
index 5c994a60..1ed57219 100644
--- a/gthumb/gth-application.c
+++ b/gthumb/gth-application.c
@@ -279,6 +279,8 @@ gth_application_command_line (GApplication            *application,
                        location = g_file_new_for_commandline_arg (remaining_args[0]);
                import_photos_from_location (location);
 
+               ImportPhotos = FALSE;
+
                return 0;
        }