occasional ruby_memcheck CI failures

[flavorjones]

I've seen ~4 of these in the past week while we've been running a lot of CI jobs

77,768 (80 direct, 77,688 indirect) bytes in 1 blocks are definitely lost in loss record 162 of 162
  malloc (at /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
 *sqlite3MemMalloc (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3Malloc (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3BtreeOpen (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *openDatabase (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *rb_sqlite3_open_v2 (database.c:92)
  vm_call_cfunc_with_frame_ (vm_insnhelper.c:3490)
  vm_call_cfunc_with_frame (vm_insnhelper.c:3518)
  vm_sendish (vm_insnhelper.c:5581)

or

77,272 (40 direct, 77,232 indirect) bytes in 1 blocks are definitely lost in loss record 163 of 163
  malloc (at /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
 *sqlite3MemMalloc (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3Malloc (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3HashInsert (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3FindFunction (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3CreateFunc (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *createFunctionApi (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3RtreeInit (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *openDatabase (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *rb_sqlite3_open_v2 (database.c:92)
  vm_call_cfunc_with_frame_ (vm_insnhelper.c:34[90](https://github.com/sparklemotion/sqlite3-ruby/actions/runs/7672212460/job/20912249461#step:6:91))

and/or

496 (40 direct, 456 indirect) bytes in 1 blocks are definitely lost in loss record 138 of 163
  malloc (at /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
 *sqlite3MemMalloc (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3Malloc (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3HashInsert (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3EndTable (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3Parser (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3RunParser (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3Prepare (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3InitCallback (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3InitOne (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3Init (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3ReadSchema (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3StartTable (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3Parser (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3RunParser (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3Prepare (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3LockAndPrepare (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *sqlite3_prepare_v2 (at /home/runner/work/sqlite3-ruby/sqlite3-ruby/lib/sqlite3/sqlite3_native.so)
 *prepare (statement.c:61)
  vm_call_cfunc_with_frame_ (vm_insnhelper.c:[34](https://github.com/sparklemotion/sqlite3-ruby/actions/runs/7672212460/job/20912249461#step:6:35)90)
  vm_call_cfunc_with_frame (vm_insnhelper.c:[35](https://github.com/sparklemotion/sqlite3-ruby/actions/runs/7672212460/job/20912249461#step:6:36)18)

Examples:

• https://github.com/sparklemotion/sqlite3-ruby/actions/runs/7659903821/job/20876079495
• https://github.com/sparklemotion/sqlite3-ruby/actions/runs/7672212460/job/20912249461

[flavorjones]

I haven't seen any instances of this since I opened the ticket, so closing. Can reopen if they recur or we reproduce.