Fixed crash, caused by multiple updates

source/ubl-settings-kernel.c

@@ -200,6 +200,10 @@ gboolean yon_tab_create_tags(kernels_tab *tab){
         yon_tag_add(GTK_BOX(tab->install_tags_box),UNKNOWN_LABEL,"tag_grey",NULL);
     }
     gtk_widget_show(tab->main_box);
+
+        g_mutex_lock(&main_config.update_mutex);
+        main_config.update_active--;
+        g_mutex_unlock(&main_config.update_mutex);
     return G_SOURCE_REMOVE;
 }
 
@@ -212,6 +216,9 @@ char *yon_package_string_set(char *target){
 }
 
 void *yon_tab_set_installed(kernels_tab *tab){
+        g_mutex_lock(&main_config.update_mutex);
+        main_config.update_active++;
+        g_mutex_unlock(&main_config.update_mutex);
     char *target_module = yon_package_string_set(tab->module);
     char *target_package = yon_package_string_set(tab->package);
     char *check_install_command = NULL;
@@ -259,9 +266,6 @@ void *yon_interface_update(main_window *widgets){
     lock=main_config.update_active;
     g_mutex_unlock(&main_config.update_mutex);
     if (!lock){
-        g_mutex_lock(&main_config.update_mutex);
-        main_config.update_active=1;
-        g_mutex_unlock(&main_config.update_mutex);
         yon_ubl_status_box_render(LOADING_LABEL,BACKGROUND_IMAGE_INFO_TYPE);
         {
             GList *list = gtk_container_get_children(GTK_CONTAINER(widgets->KernelsPackageBox));
@@ -313,10 +317,6 @@ void *yon_interface_update(main_window *widgets){
                 break;
         }
         textdomain(LocaleName);
-
-        g_mutex_lock(&main_config.update_mutex);
-        main_config.update_active=0;
-        g_mutex_unlock(&main_config.update_mutex);
     }
     return NULL;
 }
@@ -855,6 +855,11 @@ void config_init(){
 }
 
 void on_update_clicked(GtkWidget *, main_window *widgets){
+    int lock=0;
+    g_mutex_lock(&main_config.update_mutex);
+    lock = main_config.update_active;
+    g_mutex_unlock(&main_config.update_mutex);
+    if (!lock){
         yon_dictionary_free_all(main_config.kernel_tabs,free);
         yon_dictionary_free_all(main_config.addition_tabs,free);
         main_config.kernel_tabs=NULL;
@@ -862,6 +867,7 @@ void on_update_clicked(GtkWidget *, main_window *widgets){
 
         yon_interface_update(widgets);
     }
+}
 
 void on_info_clicked(GtkWidget *self, char *, kernels_tab *tab){
     info_window *window = yon_info_window_new();