test: fix compiler warning about tablet test

test.h:421:49: warning: ‘last_y’ may be used uninitialized in this function
[-Wmaybe-uninitialized]

Cannot actually happen, if we don't get into the while loop where we
initialize it, we would assert.

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

diff --git a/test/tablet.c b/test/tablet.c
index dac1506..3de28b3 100644 (file)
--- a/test/tablet.c
+++ b/test/tablet.c
@@ -503,7 +503,7 @@ START_TEST(left_handed)
        struct libinput_event *event;
        struct libinput_event_tablet *tablet_event;
        double libinput_max_x, libinput_max_y;
-       double last_x, last_y;
+       double last_x = -1.0, last_y = -1.0;
        struct axis_replacement axes[] = {
                { ABS_DISTANCE, 10 },
                { -1, -1 }