Fix initial call to svcraw_create

gssrpc raw services could not work because svcraw_create did not set
svcraw_private after allocating memory for it.

[ghudson@mit.edu: commit message, patch splitting]

(cherry picked from commit 5e3bf4a)

ticket: 7618 (new)

src/lib/rpc/svc_raw.c

@@ -80,6 +80,7 @@ svcraw_create(void)
 		srp = (struct svcraw_private *)calloc(1, sizeof (*srp));
 		if (srp == 0)
 			return (0);
+		svcraw_private = srp;
 	}
 	srp->server.xp_sock = 0;
 	srp->server.xp_port = 0;