Use correct word offset when testing for GetFBConfigsSGIX VendorPrivate.

diff --git a/src/xcb_out.c b/src/xcb_out.c
index e371cd1..f12a071 100644 (file)
--- a/src/xcb_out.c
+++ b/src/xcb_out.c
@@ -144,8 +144,10 @@ unsigned int XCBSendRequest(XCBConnection *c, int flags, struct iovec *vector, c
     flags &= ~XCB_REQUEST_RAW;
 
     /* do we need to work around the X server bug described in glx.xml? */
+    /* XXX: GetFBConfigs won't use BIG-REQUESTS in any sane
+     * configuration, but that should be handled here anyway. */
     if(req->ext && !req->isvoid && !strcmp(req->ext->name, "GLX") &&
-            ((req->opcode == 17 && ((CARD32 *) vector[0].iov_base)[0] == 0x10004) ||
+            ((req->opcode == 17 && ((CARD32 *) vector[0].iov_base)[1] == 0x10004) ||
              req->opcode == 21))
         workaround = WORKAROUND_GLX_GET_FB_CONFIGS_BUG;