[PATCH] Fix more function prototypes

[Sam James <sam@xxxxxxxxxx>]

```
regex.c:545:43: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
struct trans_func *libnfsidmap_plugin_init()
                                          ^
                                           void
1 error generated.
```

See: 167f2336b06e1bcbf26f45f2ddc4a535fed4d393
Signed-off-by: Sam James <sam@xxxxxxxxxx>
---
 support/nfsidmap/regex.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/support/nfsidmap/regex.c b/support/nfsidmap/regex.c
index 958b4ac8..8424179f 100644
--- a/support/nfsidmap/regex.c
+++ b/support/nfsidmap/regex.c
@@ -542,7 +542,7 @@ struct trans_func regex_trans = {
 	.gss_princ_to_grouplist	= regex_gss_princ_to_grouplist,
 };
 
-struct trans_func *libnfsidmap_plugin_init()
+struct trans_func *libnfsidmap_plugin_init(void)
 {
 	return (&regex_trans);
 }
-- 
2.37.3