fix: empty row on handler function #2095

Loadtest Results

param	v12.0.1	main	head
bytes_in.mean	1030.090909090909	1030.3480994467197	1030.4027397260274
bytes_in.total	28803402	28678709	29335566
bytes_out.mean	3848.6363636363635	3848.0859021340807	3848.3659992975063
bytes_out.total	107615570	107107623	109562980
duration	60000176782	60000072039	60011954888
errors.0	400 Bad Request	400 Bad Request	400 Bad Request
latencies.50th	936033	940574	929403
latencies.90th	2282539	2067590	2007510
latencies.95th	13854485	13832900	13580769
latencies.99th	14367008	14677586	13939036
latencies.max	24180865	25082438	25228065
latencies.mean	2144767	2154648	2106962
latencies.min	155480	155099	155000
latencies.total	59971979105	59972489293	59985216632
rate	466.03196023230015	463.89944301913374	474.40547559454467
requests	27962	27834	28470
status_codes.200	15252	15183	15530
status_codes.201	2542	2530	2588
status_codes.204	7626	7590	7764
status_codes.400	2542	2531	2588
success	0.9090909090909091	0.9090680462743401	0.909097295398665
throughput	423.66422573935216	421.7102480398934	431.2743836019341
wait	168906	841189	883769