From 1c2dba9c3158a1e576da92f32de66bddd3b8b30c Mon Sep 17 00:00:00 2001
From: Daniel Martin <daniel.martin@secunet.com>
Date: Wed, 13 Jun 2012 09:40:14 +0200
Subject: Fix return check of XShmQueryExtension

XShmQueryExtension returns true if it is supported. Due to a missing "!"
within the if clause the assumption was that there is no MIT-SHM even if
it was.

Regression-from: 26f6ab7cbc4d1d7fcd1de71697d42af97acdf932

Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Signed-off-by: Daniel Martin <daniel.martin@secunet.com>
---
 src/xlibclient.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/xlibclient.c b/src/xlibclient.c
index 0ef3d84..24d9525 100644
--- a/src/xlibclient.c
+++ b/src/xlibclient.c
@@ -100,7 +100,7 @@ NestedClientTryXShm(NestedClientPrivatePtr pPriv, int scrnIndex, int width, int
     int shmMajor, shmMinor;
     Bool hasSharedPixmaps;
 
-    if (XShmQueryExtension(pPriv->display)) {
+    if (!XShmQueryExtension(pPriv->display)) {
         xf86DrvMsg(scrnIndex, X_INFO, "XShmQueryExtension failed.  Dropping XShm support.\n");
 
         return FALSE;
-- 
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