vnc: don't set the quality if lossy encoding are disabled

This should not change the current behavior, but if any new
encoding try to use the tight quality, it will always be set
to -1 when lossy encodings are disabled.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/ui/vnc.c b/ui/vnc.c
index 560b98d441..9c5c5b3045 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -1780,7 +1780,9 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
             vs->tight.compression = (enc & 0x0F);
             break;
         case VNC_ENCODING_QUALITYLEVEL0 ... VNC_ENCODING_QUALITYLEVEL0 + 9:
-            vs->tight.quality = (enc & 0x0F);
+            if (vs->vd->lossy) {
+                vs->tight.quality = (enc & 0x0F);
+            }
             break;
         default:
             VNC_DEBUG("Unknown encoding: %d (0x%.8x): %d\n", i, enc, enc);