doc: aliasing-test: close fd on write error

If write fails, remember to close(fd) before returning.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/ia64/aliasing-test.c b/Documentation/ia64/aliasing-test.c
index 5caa2af3..62a190d 100644
--- a/Documentation/ia64/aliasing-test.c
+++ b/Documentation/ia64/aliasing-test.c
@@ -132,6 +132,7 @@
 
 	rc = write(fd, "1", 2);
 	if (rc <= 0) {
+		close(fd);
 		perror("write");
 		return -1;
 	}