[zenity] Fix various compiler warnings (two serious)

[Colin Walters <walters src gnome org>]

commit 5dd7442bd5b544a99553b6e595419ed999ae6eab
Author: Colin Walters <walters verbum org>
Date:   Sun Aug 12 12:20:07 2012 -0400

    Fix various compiler warnings (two serious)
    
    Missing sentinels can cause crashes.  The others are just style.

 src/color.c    |    4 ++--
 src/forms.c    |    5 ++---
 src/progress.c |    2 +-
 3 files changed, 5 insertions(+), 6 deletions(-)
---
diff --git a/src/color.c b/src/color.c
index 5e24e3d..4c9c151 100644
--- a/src/color.c
+++ b/src/color.c
@@ -58,7 +58,7 @@ void zenity_colorselection (ZenityData *data, ZenityColorData *color_data)
   }
 
   if (data->ok_label) {
-    g_object_get (G_OBJECT (dialog), "ok-button", &button);
+    g_object_get (G_OBJECT (dialog), "ok-button", &button, NULL);
     gtk_button_set_label (GTK_BUTTON (button), data->ok_label);
     gtk_button_set_image (GTK_BUTTON (button),
                           gtk_image_new_from_stock (GTK_STOCK_OK, GTK_ICON_SIZE_BUTTON));
@@ -66,7 +66,7 @@ void zenity_colorselection (ZenityData *data, ZenityColorData *color_data)
   }
 
   if (data->cancel_label) {
-    g_object_get (G_OBJECT (dialog), "cancel-button", &button);
+    g_object_get (G_OBJECT (dialog), "cancel-button", &button, NULL);
     gtk_button_set_label (GTK_BUTTON (button), data->cancel_label);
     gtk_button_set_image (GTK_BUTTON (button), 
                           gtk_image_new_from_stock (GTK_STOCK_CANCEL, GTK_ICON_SIZE_BUTTON));
diff --git a/src/forms.c b/src/forms.c
index f8f1db5..6a5b08f 100644
--- a/src/forms.c
+++ b/src/forms.c
@@ -34,9 +34,9 @@ static void zenity_forms_dialog_get_selected (GtkTreeModel *model, GtkTreePath *
 {
   gint n_columns = 0;
   gint i = 0;
+  GValue value = {0, };
 
   n_columns = gtk_tree_model_get_n_columns (model);
-  GValue value = {0, };
   for (i = 0; i < n_columns; i++) {
     gtk_tree_model_get_value (model, iter, i, &value);
     selected = g_slist_append (selected, g_value_dup_string (&value));
@@ -157,6 +157,7 @@ void zenity_forms_dialog (ZenityData *data, ZenityFormsData *forms_data)
 
   gint number_of_widgets = g_slist_length (forms_data->list);
   int list_count = 0;
+  int i = 0;
 
   zen_data = data;
 
@@ -203,8 +204,6 @@ void zenity_forms_dialog (ZenityData *data, ZenityFormsData *forms_data)
 
   gtk_table_resize (GTK_TABLE (table), number_of_widgets, 2);
 
-  int i = 0;
-
   for (tmp = forms_data->list; tmp; tmp = tmp->next) {
     ZenityFormsValue *zenity_value = (ZenityFormsValue *) tmp->data;
     GtkWidget *label;
diff --git a/src/progress.c b/src/progress.c
index 6763376..3e6f5a2 100644
--- a/src/progress.c
+++ b/src/progress.c
@@ -54,7 +54,7 @@ zenity_progress_pulsate_progress_bar (gpointer user_data)
 }
 
 static void
-zenity_progress_pulsate_stop ()
+zenity_progress_pulsate_stop (void)
 {
   if (pulsate_timeout > 0) {
     g_source_remove (pulsate_timeout);