Comment 2 for bug 1745406

StacktraceTop:
 script_obj_deref_direct (obj=0x0) at ./script-object.c:133
 script_obj_as_custom (obj=<optimized out>, user_func=user_func@entry=0x7faef226ef70 <script_obj_execute>, user_data=user_data@entry=0x7ffc11c15b10) at ./script-object.c:242
 script_execute_object_with_parlist (parameter_data=0x55ba4b4f7600, this=0x0, obj=<optimized out>, state=0x55ba4b3dd390) at ./script-execute.c:287
 script_execute_object (state=0x55ba4b3dd390, function=<optimized out>, this=this@entry=0x0, first_arg=first_arg@entry=0x0) at ./script-execute.c:649
 script_lib_plymouth_on_display_normal (state=<optimized out>, data=<optimized out>) at ./script-lib-plymouth.c:289