Patch by H.J.Lu <hongjiu.lu@intel.com> to fix typo in PCI code for Intel
460gx in X server, which causes a SEGV.

Fixes Red Hat Bug:
    https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=126586


--- xc/programs/Xserver/hw/xfree86/os-support/bus/460gxPCI.c.pci	2003-11-26 14:49:01.000000000 -0800
+++ xc/programs/Xserver/hw/xfree86/os-support/bus/460gxPCI.c	2004-08-05 08:58:38.000000000 -0700
@@ -423,7 +423,7 @@ xf86PostScan460GX(void)
 		if (pPCI->funcnum > 0)
 		    break;
 
-		if ((pBusInfo = pciBusInfo[busno_460gx[i]]))
+		if ((pBusInfo == pciBusInfo[busno_460gx[i]]))
 		    break;
 
 		/* Fix bus linkage */