[PATCH v3 4/9] hw/input/adb-kbd: Remove dead assignment

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Since commit 5a1f49718 the 'olen' variable is not really
used. Remove it to fix a warning reported by Clang static
code analyzer:

    CC      hw/input/adb-kbd.o
  hw/input/adb-kbd.c:200:5: warning: Value stored to 'olen' is never read
      olen = 0;
      ^      ~

Fixes: 5a1f49718 (adb: add support for QKeyCode)
Reported-by: Clang Static Analyzer
Suggested-by: BALATON Zoltan <balaton@eik.bme.hu>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/input/adb-kbd.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/hw/input/adb-kbd.c b/hw/input/adb-kbd.c
index 0ba8207589..a6d5c9b7c9 100644
--- a/hw/input/adb-kbd.c
+++ b/hw/input/adb-kbd.c
@@ -195,9 +195,7 @@ static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf)
 {
     KBDState *s = ADB_KEYBOARD(d);
     int keycode;
-    int olen;
 
-    olen = 0;
     if (s->count == 0) {
         return 0;
     }
@@ -216,7 +214,6 @@ static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf)
     if (keycode == 0x7f) {
         obuf[0] = 0x7f;
         obuf[1] = 0x7f;
-        olen = 2;
     } else {
         obuf[0] = keycode;
         /* NOTE: the power key key-up is the two byte sequence 0xff 0xff;
@@ -224,10 +221,9 @@ static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf)
          * byte, but choose not to bother.
          */
         obuf[1] = 0xff;
-        olen = 2;
     }
 
-    return olen;
+    return 2;
 }
 
 static int adb_kbd_request(ADBDevice *d, uint8_t *obuf,
-- 
2.21.1