demo/posix/cobalt: add missing __STD() annotation to sigwait()

We want to wait for ^C or any hangup condition received from the root
stage, make sure to annotate as __STD(sigwait()) to bypass symbol
wrapping.
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

demo/posix/cobalt/bufp-label.c

@@ -211,7 +211,7 @@ int main(int argc, char **argv)
 	if (errno)
 		fail("pthread_create");
 
-	sigwait(&set, &sig);
+	__STD(sigwait(&set, &sig));
 	pthread_cancel(svtid);
 	pthread_cancel(cltid);
 	pthread_join(svtid, NULL);

demo/posix/cobalt/bufp-readwrite.c

@@ -176,7 +176,7 @@ int main(int argc, char **argv)
 	if (errno)
 		fail("pthread_create");
 
-	sigwait(&set, &sig);
+	__STD(sigwait(&set, &sig));
 	pthread_cancel(svtid);
 	pthread_cancel(cltid);
 	pthread_join(svtid, NULL);

demo/posix/cobalt/iddp-label.c

@@ -228,7 +228,7 @@ int main(int argc, char **argv)
 	if (errno)
 		fail("pthread_create");
 
-	sigwait(&set, &sig);
+	__STD(sigwait(&set, &sig));
 	pthread_cancel(svtid);
 	pthread_cancel(cltid);
 	pthread_join(svtid, NULL);

demo/posix/cobalt/iddp-sendrecv.c

@@ -184,7 +184,7 @@ int main(int argc, char **argv)
 	if (errno)
 		fail("pthread_create");
 
-	sigwait(&set, &sig);
+	__STD(sigwait(&set, &sig));
 	pthread_cancel(svtid);
 	pthread_cancel(cltid);
 	pthread_join(svtid, NULL);

demo/posix/cobalt/xddp-echo.c

@@ -238,7 +238,7 @@ int main(int argc, char **argv)
 	if (errno)
 		fail("pthread_create");
 
-	sigwait(&set, &sig);
+	__STD(sigwait(&set, &sig));
 	pthread_cancel(rt);
 	pthread_cancel(nrt);
 	pthread_join(rt, NULL);

demo/posix/cobalt/xddp-label.c

@@ -317,7 +317,7 @@ int main(int argc, char **argv)
 	if (errno)
 		fail("pthread_create");
 
-	sigwait(&set, &sig);
+	__STD(sigwait(&set, &sig));
 	pthread_cancel(rt1);
 	pthread_cancel(rt2);
 	pthread_cancel(nrt);

demo/posix/cobalt/xddp-stream.c

@@ -244,7 +244,7 @@ int main(int argc, char **argv)
 	if (errno)
 		fail("pthread_create");
 
-	sigwait(&set, &sig);
+	__STD(sigwait(&set, &sig));
 	pthread_cancel(rt);
 	pthread_cancel(nrt);
 	pthread_join(rt, NULL);