[glade] Fix maybe uninitialized warnings

[Juan Pablo Ugarte <jpu src gnome org>]

commit 81f96c2fb14159c2fad5ecc149bf978fddbb9c06
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Fri Oct 16 18:22:10 2020 -0300

    Fix maybe uninitialized warnings

 gladeui/glade-catalog.c  | 2 +-
 src/glade-http.c         | 2 +-
 src/glade-registration.c | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gladeui/glade-catalog.c b/gladeui/glade-catalog.c
index 6c0b95ba..bfd7e2b6 100644
--- a/gladeui/glade-catalog.c
+++ b/gladeui/glade-catalog.c
@@ -769,7 +769,7 @@ glade_catalog_load_all (void)
   /* First load catalogs from user specified directories ... */
   if ((search_path = g_getenv (GLADE_ENV_CATALOG_PATH)) != NULL)
     {
-      g_auto(GStrv) split;
+      g_auto(GStrv) split = NULL;
 
       if ((split = g_strsplit (search_path, ":", 0)) != NULL)
         {
diff --git a/src/glade-http.c b/src/glade-http.c
index 457ef977..d6c08c9c 100644
--- a/src/glade-http.c
+++ b/src/glade-http.c
@@ -158,7 +158,7 @@ on_read_line_ready (GObject *source, GAsyncResult *res, gpointer data)
 {
   GladeHTTPPrivate *priv = GLADE_HTTP (data)->priv;
   g_autoptr (GError) error = NULL;
-  g_autofree gchar *line;
+  g_autofree gchar *line = NULL;
   gsize length;
 
   glade_http_emit_status (data, GLADE_HTTP_RECEIVING, NULL);
diff --git a/src/glade-registration.c b/src/glade-registration.c
index 2f5b55a4..ec8d5de0 100644
--- a/src/glade-registration.c
+++ b/src/glade-registration.c
@@ -195,7 +195,7 @@ glade_registration_show_message (GladeRegistration *registration,
 
   if (format)
     {
-      g_autofree gchar *string;
+      g_autofree gchar *string = NULL;
       va_list args;
 
       va_start (args, format);
@@ -545,7 +545,7 @@ glade_registration_save_state_foreach (GtkWidget *widget, gpointer data)
         {
           GtkTextBuffer *buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (widget));
           GtkTextIter start, end;
-          g_autofree gchar *text;
+          g_autofree gchar *text = NULL;
 
           gtk_text_buffer_get_bounds (buffer, &start, &end);
           text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);