posix.vapi: signal is allowed to be null (restoring the original handler)

Signed-off-by: Michael 'Mickey' Lauer <mlauer@vanille-media.de>

diff --git a/vapi/posix.vapi b/vapi/posix.vapi
index 62f9211a0f36815282b069478b861a6b1e611720..d9633a2a118a1d15dbe52a4dd5fc548bb0a4d97c 100644 (file)
--- a/vapi/posix.vapi
+++ b/vapi/posix.vapi
@@ -366,7 +366,7 @@ namespace Posix {
        public static delegate void sighandler_t (int signal);
 
        [CCode (cheader_filename = "signal.h")]
-       public sighandler_t signal (int signum, sighandler_t handler);
+       public sighandler_t signal (int signum, sighandler_t? handler);
 
        [CCode (cheader_filename = "string.h")]
        public int memcmp (void* s1, void* s2, size_t n);