Posix: fix build failure (#235)

Fixes: a48f137896b9 ("Posix Port: Comment and remove unused variables (#230)")

Authored-by: Thomas Pedersen <thomas@adapt-ip.com>
diff --git a/portable/ThirdParty/GCC/Posix/port.c b/portable/ThirdParty/GCC/Posix/port.c
index 05d89ff..012e8b0 100644
--- a/portable/ThirdParty/GCC/Posix/port.c
+++ b/portable/ThirdParty/GCC/Posix/port.c
@@ -525,7 +525,7 @@
      * will be unblocked.
      */
     (void)pthread_sigmask( SIG_SETMASK, &xAllSignals,
-                           *&xSchedulerOriginalSignalMask );
+                           &xSchedulerOriginalSignalMask );
 
     /* SIG_RESUME is only used with sigwait() so doesn't need a
        handler. */