rfkill: Improve documentation language

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 2a23479..8f6906e 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -282,8 +282,8 @@
 	spin_lock_irqsave(&rfkill->lock, flags);
 	if (err) {
 		/*
-		 * Failed -- reset status to _prev, this may be different
-		 * from what set set _PREV to earlier in this function
+		 * Failed -- reset status to _PREV, which may be different
+		 * from what we have set _PREV to earlier in this function
 		 * if rfkill_set_sw_state was invoked.
 		 */
 		if (rfkill->state & RFKILL_BLOCK_SW_PREV)