Flush stdout after printing name of created device, so it can be properly

read when 'ggatec create' is used in backticks or its output is piped to
another command.

Submitted by:	Paul Schenkeveld
MFC after:	3 days

ggatec/ggatec.c

@@ -457,8 +457,10 @@ g_gatec_create(void)
 	snprintf(ggioc.gctl_info, sizeof(ggioc.gctl_info), "%s:%u %s", host,
 	    port, path);
 	g_gate_ioctl(G_GATE_CMD_CREATE, &ggioc);
-	if (unit == -1)
+	if (unit == -1) {
 		printf("%s%u\n", G_GATE_PROVIDER_NAME, ggioc.gctl_unit);
+		fflush(stdout);
+	}
 	unit = ggioc.gctl_unit;
 
 	mydaemon();