Mesa (master): glx: Properly check for a valid fd in dri2CreateScreen().

[Brian Paul]

Module: Mesa
Branch: master
Commit: 7d9e0ea7393c14cbf2d58364726951b14e0d4fc7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7d9e0ea7393c14cbf2d58364726951b14e0d4fc7

Author: Henri Verbeet <hverbeet at gmail.com>
Date:   Mon Jan 31 18:09:19 2011 +0100

glx: Properly check for a valid fd in dri2CreateScreen().

Signed-off-by: Brian Paul <brianp at vmware.com>

---

 src/glx/dri2_glx.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index ab7915c..a275ba5 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -804,6 +804,8 @@ dri2CreateScreen(int screen, struct glx_display * priv)
       return NULL;
 
    memset(psc, 0, sizeof *psc);
+   psc->fd = -1;
+
    if (!glx_screen_init(&psc->base, screen, priv)) {
       Xfree(psc);
       return NULL;
@@ -921,7 +923,7 @@ dri2CreateScreen(int screen, struct glx_display * priv)
    return &psc->base;
 
 handle_error:
-   if (psc->fd)
+   if (psc->fd >= 0)
       close(psc->fd);
    if (psc->driver)
       dlclose(psc->driver);