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sdl2: add checking for NULL 

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;
}