#0  0x0807053f in pdf_dict_puts_drop (obj=0x0, key=0x8753cbd "Length", val=0x88c4878) at source/pdf/pdf-object.c:1088
#1  0x0807d2eb in pdf_dev_free_user (dev=0x88c46e8) at source/pdf/pdf-device.c:1238
#2  0x0805353a in fz_free_device (dev=0x88c46e8) at source/fitz/device.c:21