From fb42065213b58dc80d85f5a2b52f092464619d73 Mon Sep 17 00:00:00 2001
From: Christopher Lam <christopher.lck@gmail.com>
Date: Sat, 29 Aug 2020 19:29:03 +0800
Subject: [PATCH] g_free strings allocated with gnc_prefs_get_string

gnc_prefs_get_string will return a newly-allocated string. after use,
they must be g_freed.
---
 gnucash/gnome-utils/dialog-file-access.c      |  1 +
 gnucash/gnome-utils/gnc-plugin-file-history.c | 12 ++++++++++--
 gnucash/gnome/dialog-print-check.c            |  5 +++++
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/gnucash/gnome-utils/dialog-file-access.c b/gnucash/gnome-utils/dialog-file-access.c
index 363ae6fc55..18b521090d 100644
--- a/gnucash/gnome-utils/dialog-file-access.c
+++ b/gnucash/gnome-utils/dialog-file-access.c
@@ -343,6 +343,7 @@ gnc_ui_file_access (GtkWindow *parent, int type)
             faw->starting_dir = g_path_get_dirname( filepath );
             g_free ( filepath );
         }
+        g_free (last);
     }
     if (!faw->starting_dir)
         faw->starting_dir = gnc_get_default_directory(settings_section);
diff --git a/gnucash/gnome-utils/gnc-plugin-file-history.c b/gnucash/gnome-utils/gnc-plugin-file-history.c
index da69b5d88f..bf3e3600b4 100644
--- a/gnucash/gnome-utils/gnc-plugin-file-history.c
+++ b/gnucash/gnome-utils/gnc-plugin-file-history.c
@@ -256,6 +256,7 @@ gnc_history_remove_file (const char *oldfile)
                 }
                 j++;
             }
+            g_free (filename);
         }
         g_free(from);
     }
@@ -283,12 +284,18 @@ gboolean gnc_history_test_for_file (const char *oldfile)
         filename = gnc_prefs_get_string(GNC_PREFS_GROUP_HISTORY, from);
         g_free(from);
 
-        if (filename && (g_utf8_collate(oldfile, filename) == 0))
+        if (!filename)
+            continue;
+
+        if (g_utf8_collate(oldfile, filename) == 0)
         {
             found = TRUE;
+            g_free (filename);
             break;
         }
+        g_free (filename);
     }
+
     return found;
 }
 
@@ -488,7 +495,7 @@ gnc_plugin_history_list_changed (gpointer prefs,
                                  gpointer user_data)
 {
     GncMainWindow *window;
-    const gchar *filename;
+    gchar *filename;
     gint index;
 
     ENTER("");
@@ -509,6 +516,7 @@ gnc_plugin_history_list_changed (gpointer prefs,
 
     filename = gnc_prefs_get_string (GNC_PREFS_GROUP_HISTORY, pref);
     gnc_history_update_action (window, index, filename);
+    g_free (filename);
 
     gnc_main_window_actions_updated (window);
     LEAVE("");
diff --git a/gnucash/gnome/dialog-print-check.c b/gnucash/gnome/dialog-print-check.c
index 6aefd7e465..21a57cd289 100644
--- a/gnucash/gnome/dialog-print-check.c
+++ b/gnucash/gnome/dialog-print-check.c
@@ -609,8 +609,11 @@ gnc_ui_print_restore_dialog(PrintCheckDialog *pcd)
     if (guid == NULL)
         gtk_combo_box_set_active(GTK_COMBO_BOX(pcd->format_combobox), 0);
     else if (strcmp(guid, "custom") == 0)
+    {
         gtk_combo_box_set_active(GTK_COMBO_BOX(pcd->format_combobox),
                                  pcd->format_max - 1);
+        g_free (guid);
+    }
     else
     {
         model = gtk_combo_box_get_model(GTK_COMBO_BOX(pcd->format_combobox));
@@ -622,7 +625,9 @@ gnc_ui_print_restore_dialog(PrintCheckDialog *pcd)
         {
             gtk_combo_box_set_active(GTK_COMBO_BOX(pcd->format_combobox), 0);
         }
+        g_free (guid);
     }
+
     active = gnc_prefs_get_int(GNC_PREFS_GROUP, GNC_PREF_CHECK_POSITION);
 
     /* If the check format used last time no longer exists, then the saved check