Prevent Lua from crashing if clear_bindings() is called on a statement
that failed to prepare().

ok mbalmer@

Guard against double freeing of objects (explicit by the Lua program, then
later by the garbage collector).
This fixes PR bin/52218.

Fix function name, no functional change.
Found by Travis Paul, (see PR/50786), thanks for reporting!

lua: updated from 5.1 to 5.3 work3

* lua(1):
- changed lua_Integer to intmax_t
- updated distrib/sets/lists and etc/mtree
- updated bsd.lua.mk
- fixed bozohttpd (lua-bozo.c)
- compatibiliz

lua: updated from 5.1 to 5.3 work3

* lua(1):
- changed lua_Integer to intmax_t
- updated distrib/sets/lists and etc/mtree
- updated bsd.lua.mk
- fixed bozohttpd (lua-bozo.c)
- compatibilized bindings: gpio, sqlite
* lua(4):
- removed floating-point and libc dependencies using '#ifndef _KERNEL'
- fixed division by zero and exponentiation
- libkern: added isalnum(), iscntrl(), isgraph(), isprint() and ispunct()
- acpica: removed isprint() from acnetbsd.h
- libc: moved strcspn.c, strpbrk.c and strspn.c to common
- removed stub headers
- compatibilized bindings: luapmf, luasystm
* reorganized luaconf.h
* updated doc/CHANGES and doc/RESPONSIBLE

show more ...

More user friendly sqlite.open() function.
Add a few more symbols.
Register all function in the sqlite table.

- Update to the version on github.com.
- Fix stmt_bind(): SQLite makes a copy of the string passed (which can be
garbage collected). Problem found by Kubo Takehiro.

Add __printflike attribution to use vprintf and friends with an argument
as format string.

Add db:changes()

Remove un-needed headers.

A Lua module to access SQLite databases.