[gthumb] _g_path_join: added const to the first parameter

[Paolo Bacchilega <paobac src gnome org>]

commit 01fc9691fb63cab28b38509f4b7156ab680023b2
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sun Mar 22 08:27:09 2020 +0100

    _g_path_join: added const to the first parameter

 gthumb/uri-utils.c | 2 +-
 gthumb/uri-utils.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gthumb/uri-utils.c b/gthumb/uri-utils.c
index 06bfcc7f..4c417db5 100644
--- a/gthumb/uri-utils.c
+++ b/gthumb/uri-utils.c
@@ -891,7 +891,7 @@ _g_path_join_components (char **comp_v)
 
 
 char *
-_g_path_join (char *first, ...)
+_g_path_join (const char *first, ...)
 {
        va_list      args;
        const char  *arg;
diff --git a/gthumb/uri-utils.h b/gthumb/uri-utils.h
index ca725c7f..c1987129 100644
--- a/gthumb/uri-utils.h
+++ b/gthumb/uri-utils.h
@@ -73,7 +73,7 @@ char *                _g_uri_append_path              (const char      *uri,
 char **                _g_path_split_components        (const char      *path,
                                                 int             *size);
 char *         _g_path_join_components         (char           **comp_v);
-char *         _g_path_join                    (char            *first,
+char *         _g_path_join                    (const char      *first,
                                                 ...) G_GNUC_NULL_TERMINATED;
 const char *   _g_path_get_basename            (const char      *path);
 char *         _g_path_get_parent              (const char      *path);