filter_list: add cleanup function and call it on exit.

Change-Id: I51d8074cc5a63d4fd3af8852df120d6b4163217f
Reviewed-on: https://code.wireshark.org/review/19942
Reviewed-by: Michael Mann <mmann78@netscape.net>

filter_files.c

@@ -90,6 +90,23 @@ add_filter_entry(GList *fl, const char *filt_name, const char *filt_expr)
     return g_list_append(fl, filt);
 }
 
+static void
+free_filter_entry(gpointer data)
+{
+    filter_def *filt = (filter_def*)data;
+    g_free(filt->name);
+    g_free(filt->strval);
+    g_free(filt);
+}
+
+void free_filter_lists(void)
+{
+    g_list_free_full(capture_filters, free_filter_entry);
+    g_list_free_full(display_filters, free_filter_entry);
+    g_list_free_full(capture_edited_filters, free_filter_entry);
+    g_list_free_full(display_edited_filters, free_filter_entry);
+}
+
 static GList *
 remove_filter_entry(GList *fl, GList *fl_entry)
 {

filter_files.h

@@ -89,6 +89,11 @@ void save_filter_list(filter_list_type_t list_type, char **pref_path_return,
  */
 void copy_filter_list(filter_list_type_t dest_type, filter_list_type_t src_type);
 
+/*
+ * Free all filter lists
+ */
+void free_filter_lists(void);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */

sharkd.c

@@ -298,6 +298,7 @@ main(int argc, char *argv[])
   ret = sharkd_loop();
 clean_exit:
   col_cleanup(&cfile.cinfo);
+  free_filter_lists();
   return ret;
 }
 

tshark.c

@@ -2201,6 +2201,7 @@ clean_exit:
   capture_opts_cleanup(&global_capture_opts);
 #endif
   col_cleanup(&cfile.cinfo);
+  free_filter_lists();
   return exit_status;
 }
 

ui/gtk/main.c

@@ -2815,6 +2815,7 @@ clean_exit:
     capture_opts_cleanup(&global_capture_opts);
 #endif
     col_cleanup(&cfile.cinfo);
+    free_filter_lists();
     return ret;
 }
 

ui/qt/wireshark_application.cpp

@@ -716,6 +716,11 @@ WiresharkApplication::WiresharkApplication(int &argc,  char **argv) :
     connect(qApp, SIGNAL(aboutToQuit()), this, SLOT(cleanup()));
 }
 
+WiresharkApplication::~WiresharkApplication()
+{
+    free_filter_lists();
+}
+
 void WiresharkApplication::registerUpdate(register_action_e action, const char *message)
 {
     emit splashUpdate(action, message);

ui/qt/wireshark_application.h

@@ -60,6 +60,7 @@ class WiresharkApplication : public QApplication
     Q_OBJECT
 public:
     explicit WiresharkApplication(int &argc,  char **argv);
+    ~WiresharkApplication();
 
     enum AppSignal {
         CaptureFilterListChanged,