test/format sanitizer statistics cursor memory leak

==116934==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 48 byte(s) in 3 object(s) allocated from:

    #0 0x48e109 in calloc (/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/test/format/t+0x48e109)

    WT-1 0x686918 in __wt_calloc /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/os_posix/os_alloc.c:39

    WT-2 0x558eea in __wt_curstat_open /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/cursor/cur_stat.c:534

    WT-3 0x54c96c in __statlog_dump /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_stat.c:162

    WT-4 0x54dc89 in __statlog_apply /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_stat.c:206

    WT-5 0xaf67de in __wt_conn_btree_apply_single /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_dhandle.c:623

    WT-6 0xaf4685 in __conn_btree_apply_internal /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_dhandle.c:494

    WT-7 0xaf32d9 in __wt_conn_btree_apply /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_dhandle.c:536

    WT-8 0x542ae6 in __statlog_log_one /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_stat.c:331

    WT-9 0x54abfa in __statlog_server /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_stat.c:418

    WT-10 0x3f17e07ee4 in start_thread (/lib64/libpthread.so.0+0x3f17e07ee4)

Indirect leak of 342 byte(s) in 3 object(s) allocated from:

    #0 0x48e109 in calloc (/home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/test/format/t+0x48e109)

    WT-1 0x686918 in __wt_calloc /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/os_posix/os_alloc.c:39

    WT-2 0x68a07f in __wt_strndup /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/os_posix/os_alloc.c:187

    WT-3 0x68a85d in __wt_strdup /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/os_posix/os_alloc.c:206

    WT-4 0x5591f4 in __wt_curstat_open /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/cursor/cur_stat.c:536

    WT-5 0x54c96c in __statlog_dump /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_stat.c:162

    WT-6 0x54dc89 in __statlog_apply /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_stat.c:206

    WT-7 0xaf67de in __wt_conn_btree_apply_single /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_dhandle.c:623

    WT-8 0xaf4685 in __conn_btree_apply_internal /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_dhandle.c:494

    WT-9 0xaf32d9 in __wt_conn_btree_apply /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_dhandle.c:536

    WT-10 0x542ae6 in __statlog_log_one /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_stat.c:331

    WT-11 0x54abfa in __statlog_server /home/jenkins/jenkins/workspace/wiredtiger-test-format-stress-sanitizer/build_posix/../src/conn/conn_stat.c:418

    WT-12 0x3f17e07ee4 in start_thread (/lib64/libpthread.so.0+0x3f17e07ee4)

############################################

#  RUN PARAMETERS

############################################

abort=0

auto_throttle=1

firstfit=0

bitcnt=5

bloom=1

bloom_bit_count=17

bloom_hash_count=16

bloom_oldest=1

cache=71

checkpoints=1

checksum=on

chunk_size=7

compaction=0

compression=snappy

data_extend=0

data_source=file

delete_pct=25

dictionary=0

evict_max=4

file_type=variable-length column-store

backups=0

huffman_key=0

huffman_value=0

insert_pct=30

internal_key_truncation=1

internal_page_max=12

isolation=read-uncommitted

key_gap=5

key_max=50

key_min=15

leak_memory=0

leaf_page_max=16

logging=1

logging_archive=0

logging_prealloc=1

lsm_worker_threads=3

merge_max=16

mmap=1

ops=100000

prefix_compression=1

prefix_compression_min=1

repeat_data_pct=79

reverse=0

rows=100000

runs=1

split_pct=62

statistics=0

statistics_server=1

threads=10

timer=20

value_max=2385

value_min=13

wiredtiger_config=

write_pct=83

############################################