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window.c: Fix SIGSEGV in pointer_handle_motion 

Move null pointer check and assignments before first window dereference.
This commit is contained in:
Paul Winwood 2013-08-29 10:52:54 +01:00 committed by Kristian Høgsberg
parent 037bdc4c5d
commit b22bf57e21
1 changed files with 6 additions and 6 deletions
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12
clients/window.c
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@ -2904,6 +2904,12 @@ pointer_handle_motion(void *data, struct wl_pointer *pointer,
float sx = wl_fixed_to_double(sx_w);
float sy = wl_fixed_to_double(sy_w);
input->sx = sx;
input->sy = sy;
if (!window)
return;
/* when making the window smaller - e.g. after a unmaximise we might
* still have a pending motion event that the compositor has picked
* based on the old surface dimensions
@ -2912,12 +2918,6 @@ pointer_handle_motion(void *data, struct wl_pointer *pointer,
sy > window->main_surface->allocation.height)
return;
input->sx = sx;
input->sy = sy;
if (!window)
return;
if (!(input->grab && input->grab_button)) {
widget = window_find_widget(window, sx, sy);
input_set_focus_widget(input, widget, sx, sy);