hrtimer: fix a typo in comment

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 72206cf..66163df 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1774,7 +1774,7 @@
 	}
 
 	/*
-	 * A NULL parameter means "inifinte"
+	 * A NULL parameter means "infinite"
 	 */
 	if (!expires) {
 		schedule();