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sdl2: add checking for NULL

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Sometimes SDL2 console can't be retrieved on events and scon variable
becomes NULL. This patch prevents processing of the events when the console
is not available.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Signed-off-by: Maria Klimushenkova <maria.klimushenkova@ispras.ru>
Message-id: 20180626064729.18070.47600.stgit@pasha-VirtualBox
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2018-06-26 09:47:29 +03:00 committed by Gerd Hoffmann
parent 48db08cf16
commit 49213b721f
1 changed files with 3 additions and 3 deletions
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6
ui/sdl2.c
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@ -438,7 +438,7 @@ static void handle_mousemotion(SDL_Event *ev)
int max_x, max_y;
struct sdl2_console *scon = get_scon_from_window(ev->motion.windowID);
if (!qemu_console_is_graphic(scon->dcl.con)) {
if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
return;
}
@ -470,7 +470,7 @@ static void handle_mousebutton(SDL_Event *ev)
SDL_MouseButtonEvent *bev;
struct sdl2_console *scon = get_scon_from_window(ev->button.windowID);
if (!qemu_console_is_graphic(scon->dcl.con)) {
if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
return;
}
@ -496,7 +496,7 @@ static void handle_mousewheel(SDL_Event *ev)
SDL_MouseWheelEvent *wev = &ev->wheel;
InputButton btn;
if (!qemu_console_is_graphic(scon->dcl.con)) {
if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
return;
}