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, 3 insertions, 3 deletions

diff --git a/usr.sbin/pkg_install/version/perform.c b/usr.sbin/pkg_install/version/perform.c
index a5ac36f..426d979 100644
--- a/usr.sbin/pkg_install/version/perform.c
+++ b/usr.sbin/pkg_install/version/perform.c
@@ -27,9 +27,9 @@ __FBSDID("$FreeBSD$");
 #include <fetch.h>
 #include <signal.h>
 
-FILE *IndexFile;
-char IndexPath[PATH_MAX] = "";
-struct index_head Index = SLIST_HEAD_INITIALIZER(Index);
+static FILE *IndexFile;
+static char IndexPath[PATH_MAX] = "";
+static struct index_head Index = SLIST_HEAD_INITIALIZER(Index);
 
 static int pkg_do(char *);
 static void show_version(Package, const char *, const char *);