More -Wmissing-variable-declarations fixes.

In addition to adding `static' where possible:

- bin/date: Move `retval' into extern.h to make it visible to date.c.
- bin/ed: Move globally used variables into ed.h.
- sbin/camcontrol: Move `verbose' into camcontrol.h and fix shadow warnings.
- usr.bin/calendar: Remove unneeded variables.
- usr.bin/chat: Make `line' local instead of global.
- usr.bin/elfdump: Comment out unneeded function.
- usr.bin/rlogin: Use _Noreturn instead of __dead2.
- usr.bin/tset: Pull `Ospeed' into extern.h.
- usr.sbin/mfiutil: Put global variables in mfiutil.h.
- usr.sbin/pkg: Remove unused `os_corres'.
- usr.sbin/quotaon, usr.sbin/repquota: Remove unused `qfname'.

1 files changed, 1 insertions, 1 deletions

diff --git a/usr.sbin/gpioctl/gpioctl.c b/usr.sbin/gpioctl/gpioctl.c
index 8956ef4..9d76e1d 100644
--- a/usr.sbin/gpioctl/gpioctl.c
+++ b/usr.sbin/gpioctl/gpioctl.c
@@ -43,7 +43,7 @@ struct flag_desc {
 	uint32_t flag;
 };
 
-struct flag_desc gpio_flags[] = {
+static struct flag_desc gpio_flags[] = {
 	{ "IN", GPIO_PIN_INPUT },
 	{ "OUT", GPIO_PIN_OUTPUT },
 	{ "OD", GPIO_PIN_OPENDRAIN },