File 0003-fix_null_deref.patch of Package plymouth

diff -Nura plymouth-0.9.5+git20200921+20778f2/src/libply-splash-graphics/ply-label.c plymouth-0.9.5+git20200921+20778f2_new/src/libply-splash-graphics/ply-label.c
--- plymouth-0.9.5+git20200921+20778f2/src/libply-splash-graphics/ply-label.c	2020-10-05 23:11:23.011964608 +0800
+++ plymouth-0.9.5+git20200921+20778f2_new/src/libply-splash-graphics/ply-label.c	2020-10-05 23:17:39.139340680 +0800
@@ -130,6 +130,15 @@
 
         label->control = label->plugin_interface->create_control ();
 
+        if (label->control == NULL) {
+                ply_save_errno ();
+                label->plugin_interface = NULL;
+                ply_close_module (label->module_handle);
+                label->module_handle = NULL;
+                ply_restore_errno ();
+                return false;
+        }
+
         if (label->text != NULL)
                 label->plugin_interface->set_text_for_control (label->control,
                                                                label->text);