The 'uname' part is necessary because the uname() function returns a

non-negative value.

diff --git a/widget/GfxInfoX11.cpp b/widget/GfxInfoX11.cpp

--- a/widget/GfxInfoX11.cpp

+++ b/widget/GfxInfoX11.cpp

@@ -135,7 +136,7 @@

     // only useful for Linux kernel version check for FGLRX driver.

     // assumes X client == X server, which is sad.

     struct utsname unameobj;

-    if (!uname(&unameobj))

+    if (uname(&unameobj) >= 0)

     {

       mOS.Assign(unameobj.sysname);

       mOSRelease.Assign(unameobj.release);