[datasets 10/18] gui: Prefer NULL to 0 for initializing pointers.

[Ben Pfaff]

Using NULL instead of 0 is better modern C style.
---
 src/ui/gui/helper.c               |    2 +-
 src/ui/gui/val-labs-dialog.c      |    8 ++++----
 src/ui/gui/var-display.c          |    2 +-
 src/ui/gui/variable-info-dialog.c |    2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/ui/gui/helper.c b/src/ui/gui/helper.c
index 36165c7..75954fb 100644
--- a/src/ui/gui/helper.c
+++ b/src/ui/gui/helper.c
@@ -52,7 +52,7 @@
 gchar *
 value_to_text (union value v, const PsppireDict *dict, struct fmt_spec format)
 {
-  gchar *s = 0;
+  gchar *s = NULL;
 
   s = data_out (&v, dict_get_encoding (dict->dict),  &format);
   g_strchug (s);
diff --git a/src/ui/gui/val-labs-dialog.c b/src/ui/gui/val-labs-dialog.c
index 605be36..950a59e 100644
--- a/src/ui/gui/val-labs-dialog.c
+++ b/src/ui/gui/val-labs-dialog.c
@@ -1,5 +1,5 @@
 /* PSPPIRE - a graphical user interface for PSPP.
-   Copyright (C) 2005, 2009, 2011  Free Software Foundation
+   Copyright (C) 2005, 2009, 2010, 2011  Free Software Foundation
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -192,7 +192,7 @@ val_labs_ok (GtkWidget *w, gpointer data)
 
   val_labs_destroy (dialog->labs);
 
-  dialog->labs = 0;
+  dialog->labs = NULL;
 
   gtk_widget_hide (dialog->window);
 
@@ -206,7 +206,7 @@ val_labs_cancel (struct val_labs_dialog *dialog)
 {
   val_labs_destroy (dialog->labs);
 
-  dialog->labs = 0;
+  dialog->labs = NULL;
 
   gtk_widget_hide (dialog->window);
 }
@@ -461,7 +461,7 @@ val_labs_dialog_create (GtkWindow *toplevel, 
PsppireVarStore *var_store)
   g_signal_connect (dialog->add_button, "clicked",
                   G_CALLBACK (on_add), dialog);
 
-  dialog->labs = 0;
+  dialog->labs = NULL;
 
   g_object_unref (xml);
 
diff --git a/src/ui/gui/var-display.c b/src/ui/gui/var-display.c
index 26de981..5f85af2 100644
--- a/src/ui/gui/var-display.c
+++ b/src/ui/gui/var-display.c
@@ -69,7 +69,7 @@ missing_values_to_string (const PsppireDict *dict, const 
struct variable *pv, GE
 
          if ( mv_has_value (miss))
            {
-             gchar *ss = 0;
+             gchar *ss = NULL;
 
              ss = value_to_text (*mv_get_value (miss, 0), dict, *fmt);
 
diff --git a/src/ui/gui/variable-info-dialog.c 
b/src/ui/gui/variable-info-dialog.c
index 37f501a..3692a0d 100644
--- a/src/ui/gui/variable-info-dialog.c
+++ b/src/ui/gui/variable-info-dialog.c
@@ -55,7 +55,7 @@ label_to_string (const struct variable *var)
 static void
 populate_text (PsppireDictView *treeview, gpointer data)
 {
-  gchar *text = 0;
+  gchar *text = NULL;
   GString *gstring;
   PsppireDict *dict;
 
-- 
1.7.2.5