CID 358672: Control flow issue in tests/bench/render.c

Coverity Scan claims dead code in tests/bench/render.c (see !6517 (merged)):

*** CID 358672:  Control flow issues  (UNREACHABLE)
/tests/bench/render.c: 85 in main()
79     					   DNS_MESSAGEPARSE_PRESERVEORDER);
80     		CHECKRESULT(result, "dns_message_parse()");
81     		isc_buffer_free(&filebuf);
82     
83     		continue;
84     
>>>     CID 358672:  Control flow issues  (UNREACHABLE)
>>>     This code cannot be reached: "isc_buffer_t *printbuf = NULL;".
85     		isc_buffer_t *printbuf = NULL;
86     		isc_buffer_allocate(mctx, &printbuf, 1024 * 1024);
87     
88     		result = dns_message_totext(message[i], &dns_master_style_debug,
89     					    0, printbuf);
90     		CHECKRESULT(result, "dns_message_totext()");