testquorum: check for quorum_dispatch return code

Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
Reviewed-by: Steven Dake <sdake@redhat.com>

test/testquorum.c

@@ -55,7 +55,10 @@ int main(int argc, char *argv[])
 	printf("-------------------\n");
 
 	while (1)
-		quorum_dispatch(g_handle, CS_DISPATCH_ALL);
+		if (quorum_dispatch(g_handle, CS_DISPATCH_ALL) != CS_OK) {
+			fprintf(stderr, "Error from quorum_dispatch\n");
+			return -1;
+		}
 
 	return 0;
 }