Cleanup OpenSSL reference on bad option

Another exit path that needs to be cleaned up.

(cherry picked from commit e27fc4bbc5)

bin/dig/dig.c

@@ -2207,6 +2207,7 @@ plus_option(char *option, bool is_batchfile, bool *need_clone,
 
 #if !TARGET_OS_IPHONE
 exit_or_usage:
+	cleanup_openssl_refs();
 	digexit();
 #endif /* if !TARGET_OS_IPHONE */
 }

bin/dig/dighost.c

@@ -247,9 +247,6 @@ clear_current_lookup(void);
 static bool
 next_origin(dig_lookup_t *oldlookup);
 
-static void
-cleanup_openssl_refs(void);
-
 static int
 count_dots(char *string) {
 	char *s;
@@ -4712,7 +4709,7 @@ cancel_all(void) {
 	UNLOCK_LOOKUP;
 }
 
-static void
+void
 cleanup_openssl_refs(void) {
 	if (tsigkey != NULL) {
 		debug("freeing TSIG key %p", tsigkey);

bin/dig/dighost.h

@@ -295,6 +295,9 @@ warn(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);
 noreturn void
 digexit(void);
 
+void
+cleanup_openssl_refs(void);
+
 void
 debug(const char *format, ...) ISC_FORMAT_PRINTF(1, 2);