[gtk/matthiasc/for-master] Avoid adding // to resource paths

[Matthias Clasen <matthiasc src gnome org>]

commit aeca9cb7baa8ef044723c60a1bfcb1a4aa27fa3c
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Dec 11 21:47:54 2020 -0500

    Avoid adding // to resource paths
    
    The GResource machinery is not forgiving about this
    sort of thing.
    
    Fixes: #3469

 gtk/gtkapplication.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkapplication.c b/gtk/gtkapplication.c
index 7b438f1581..e3e4401ff5 100644
--- a/gtk/gtkapplication.c
+++ b/gtk/gtkapplication.c
@@ -191,19 +191,23 @@ gtk_application_load_resources (GtkApplication *application)
 {
   GtkApplicationPrivate *priv = gtk_application_get_instance_private (application);
   const char *base_path;
+  const char *optional_slash = "/";
 
   base_path = g_application_get_resource_base_path (G_APPLICATION (application));
 
   if (base_path == NULL)
     return;
 
+  if (base_path[strlen (base_path) - 1] == '/')
+    optional_slash = "";
+
   /* Expand the icon search path */
   {
     GtkIconTheme *default_theme;
     char *iconspath;
 
     default_theme = gtk_icon_theme_get_for_display (gdk_display_get_default ());
-    iconspath = g_strconcat (base_path, "/icons/", NULL);
+    iconspath = g_strconcat (base_path, optional_slash, "icons/", NULL);
     gtk_icon_theme_add_resource_path (default_theme, iconspath);
     g_free (iconspath);
   }
@@ -212,7 +216,7 @@ gtk_application_load_resources (GtkApplication *application)
   {
     char *menuspath;
 
-    menuspath = g_strconcat (base_path, "/gtk/menus.ui", NULL);
+    menuspath = g_strconcat (base_path, optional_slash, "gtk/menus.ui", NULL);
     if (g_resources_get_info (menuspath, G_RESOURCE_LOOKUP_FLAGS_NONE, NULL, NULL, NULL))
       priv->menus_builder = gtk_builder_new_from_resource (menuspath);
     g_free (menuspath);
@@ -231,7 +235,7 @@ gtk_application_load_resources (GtkApplication *application)
   {
     char *path;
 
-    path = g_strconcat (base_path, "/gtk/help-overlay.ui", NULL);
+    path = g_strconcat (base_path, optional_slash, "gtk/help-overlay.ui", NULL);
     if (g_resources_get_info (path, G_RESOURCE_LOOKUP_FLAGS_NONE, NULL, NULL, NULL))
       {
         const char * const accels[] = { "<Control>question", NULL };