dix: move bounds check before access

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/dix/getevents.c b/dix/getevents.c
index 7ddf88bad..5224d31eb 100644
--- a/dix/getevents.c
+++ b/dix/getevents.c
@@ -578,12 +578,13 @@ GetMaximumEventsNum(void) {
 static void
 clipAxis(DeviceIntPtr pDev, int axisNum, int *val)
 {
-    AxisInfoPtr axis = pDev->valuator->axes + axisNum;
-    /* InitValuatoraAxisStruct ensures that (min < max). */
+    AxisInfoPtr axis;
 
     if (axisNum >= pDev->valuator->numAxes)
         return;
 
+    axis = pDev->valuator->axes + axisNum;
+
     /* If a value range is defined, clip. If not, do nothing */
     if (axis->max_value <= axis->min_value)
         return;