Nuke unused variables

Xi/chgdctl.c

@@ -138,7 +138,6 @@ ProcXChangeDeviceControl(ClientPtr client)
     CARD32 *resolution;
     xDeviceAbsCalibCtl *calib;
     xDeviceAbsAreaCtl *area;
-    xDeviceCoreCtl *c;
     xDeviceEnableCtl *e;
     devicePresenceNotify dpn;
 

dix/main.c

@@ -240,7 +240,6 @@ int main(int argc, char *argv[], char *envp[])
 #endif
 {
     int		i;
-    char	*xauthfile;
     HWEventQueueType	alwaysCheckForInput[2];
 
     display = "0";

dix/window.c

@@ -1014,7 +1014,7 @@ ChangeWindowAttributes(WindowPtr pWin, Mask vmask, XID *vlist, ClientPtr client)
     Pixmap pixID;
     CursorPtr pCursor, pOldCursor;
     Cursor cursorID;
-    WindowPtr pChild, pLayerWin;
+    WindowPtr pChild;
     Colormap cmap;
     ColormapPtr	pCmap;
     xEvent xE;

hw/xfree86/ramdac/xf86Cursor.c

@@ -460,7 +460,6 @@ xf86DeviceCursorInitialize(DeviceIntPtr pDev, ScreenPtr pScreen)
 static void
 xf86DeviceCursorCleanup(DeviceIntPtr pDev, ScreenPtr pScreen)
 {
-    DeviceIntPtr it;
     xf86CursorScreenPtr ScreenPriv = (xf86CursorScreenPtr)dixLookupPrivate(
             &pScreen->devPrivates, xf86CursorScreenKey);
 

hw/xnest/Events.c

@@ -117,7 +117,6 @@ void
 xnestCollectEvents(void)
 {
   XEvent X;
-  xEvent x;
   int i, n, valuators[2];
   ScreenPtr pScreen;
   GetEventList(&xnestEvents);