fix: plug several memory leaks across Nemo

Fix 7 memory leaks found via static analysis of the source code:

1. src/nemo-mime-actions.c (activate_activation_uris_ready_callback):
   g_file_get_path() result for admin URI construction was never freed.

2. src/nemo-mime-actions.c (open_with_dialog_response_cb):
   NemoFile from nemo_file_get_by_uri() was never unref'd after
   launching the application.

3. src/nemo-mime-actions.c (run_open_with_dialog):
   uri and mime_type strings were never freed after constructing
   the application chooser widget.

4. src/nemo-open-with-main.c (on_dialog_response):
   NemoFile from nemo_file_get_by_uri() was never unref'd after
   launching the application.

5. src/nemo-window.c (nemo_window_show):
   sidebar_id was overwritten by g_settings_get_string() without
   freeing the previous value, leaking on every window show.

6. libnemo-private/nemo-file-conflict-dialog.c (file_list_ready_cb):
   dest_name and dest_dir_name from nemo_file_get_display_name()
   were never freed. Converted to g_autofree.

7. src/nemo-properties-window.c (create_volume_usage_widget):
   uri from nemo_file_get_activation_uri() was never freed after
   creating the GFile location.

Author: You name

libnemo-private/nemo-file-conflict-dialog.c

@@ -106,7 +106,7 @@ file_list_ready_cb (GList *files,
 	NemoFileConflictDialogDetails *details;
 	char *primary_text, *message, *secondary_text;
 	const gchar *message_extra;
-	char *dest_name, *dest_dir_name, *edit_name;
+	char *edit_name;
 	char *label_text;
 	char *size, *date, *type = NULL;
 	GdkPixbuf *pixbuf;
@@ -127,8 +127,8 @@ file_list_ready_cb (GList *files,
 	src_mtime = nemo_file_get_mtime (src);
 	dest_mtime = nemo_file_get_mtime (dest);
 
-	dest_name = nemo_file_get_display_name (dest);
-	dest_dir_name = nemo_file_get_display_name (dest_dir);
+	g_autofree gchar *dest_name = nemo_file_get_display_name (dest);
+	g_autofree gchar *dest_dir_name = nemo_file_get_display_name (dest_dir);
 
 	source_is_dir = nemo_file_is_directory (src);
 	dest_is_dir = nemo_file_is_directory (dest);

src/nemo-mime-actions.c

@@ -1149,6 +1149,7 @@ open_with_dialog_response_cb (GtkDialog *dialog,
 
     gtk_widget_destroy (GTK_WIDGET (dialog));
     g_object_unref (info);
+    nemo_file_unref (file);
 }
 
 static void
@@ -1179,6 +1180,9 @@ run_open_with_dialog (ActivateParametersSpecial *params)
 
     GtkWidget *chooser = nemo_mime_application_chooser_new (uri, uris, mime_type, ok_button);
 
+    g_free (uri);
+    g_free (mime_type);
+
     GtkWidget *content = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
 
     gtk_box_pack_start (GTK_BOX (content), chooser, TRUE, TRUE, 0);
@@ -1713,6 +1717,7 @@ activate_files (ActivateParameters *parameters)
 
                 file_path = g_file_get_path (initial_location);
                 uri = g_strconcat ("admin://", file_path, NULL);
+                g_free (file_path);
             }
 
             final_location = g_file_new_for_uri (uri);

src/nemo-open-with-main.c

@@ -80,6 +80,7 @@ app_chooser_dialog_response_cb (GtkDialog *dialog,
 
     gtk_widget_destroy (GTK_WIDGET (dialog));
     g_object_unref (info);
+    nemo_file_unref (file);
 }
 
 int

src/nemo-properties-window.c

@@ -3052,6 +3052,7 @@ create_volume_usage_widget (NemoPropertiesWindow *window)
 	uri = nemo_file_get_activation_uri (file);
 
 	location = g_file_new_for_uri (uri);
+	g_free (uri);
 	info = g_file_query_filesystem_info (location, "filesystem::*", NULL, NULL);
 
 	if (info) {

src/nemo-window.c

@@ -1623,6 +1623,7 @@ nemo_window_show (GtkWidget *widget)
 
 	window = NEMO_WINDOW (widget);
 
+    g_free (window->details->sidebar_id);
     window->details->sidebar_id = g_settings_get_string (nemo_window_state,
                                                          NEMO_WINDOW_STATE_SIDE_PANE_VIEW);