Mesa (master): st/mesa: fix crash with blit-based GetTexImage

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 17003b44b76f2442a8bd795c8a314146facef3e5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=17003b44b76f2442a8bd795c8a314146facef3e5

Author: Marek Olšák <maraeo at gmail.com>
Date:   Fri Mar 22 00:31:47 2013 +0100

st/mesa: fix crash with blit-based GetTexImage

https://bugs.freedesktop.org/show_bug.cgi?id=62573

Tested-by: Andreas Boll <andreas.boll.dev at gmail.com>

---

 src/mesa/state_tracker/st_cb_texture.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index 94fbbf7..0cd0d77 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -868,7 +868,7 @@ st_GetTexImage(struct gl_context * ctx,
       goto fallback;
    }
 
-   if (!stImage->pt) {
+   if (!stImage->pt || !src) {
       goto fallback;
    }