UBIFS: correct spelling of "thrice".

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index 323d83a..15409815 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -263,7 +263,7 @@
 
 	idx_size = c->old_idx_sz + c->budg_idx_growth + c->budg_uncommitted_idx;
 
-	/* And make sure we have trice the index size of space reserved */
+	/* And make sure we have thrice the index size of space reserved */
 	idx_size = idx_size + (idx_size << 1);
 
 	/*
@@ -388,7 +388,7 @@
  * This function makes sure UBIFS has enough free eraseblocks for index growth
  * and data.
  *
- * When budgeting index space, UBIFS reserves trice as more LEBs as the index
+ * When budgeting index space, UBIFS reserves thrice as many LEBs as the index
  * would take if it was consolidated and written to the flash. This guarantees
  * that the "in-the-gaps" commit method always succeeds and UBIFS will always
  * be able to commit dirty index. So this function basically adds amount of