[PATCH] lib/string.c: fix a typo in comment: 'iff' -->'if'

[YueHaibing]

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 lib/string.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/string.c b/lib/string.c
index 2c0900a..23ed944 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -609,7 +609,7 @@ EXPORT_SYMBOL(strsep);
  * @s1: one string
  * @s2: another string
  *
- * This routine returns true iff two strings are equal, treating both
+ * This routine returns true if two strings are equal, treating both
  * NUL and newline-then-NUL as equivalent string terminations.  It's
  * geared for use with sysfs input strings, which generally terminate
  * with newlines but are compared against values without newlines.
-- 
2.7.0