[Qemu-devel] [PULL 3/3] sdl2: add checking for NULL

[Gerd Hoffmann]

From: Pavel Dovgalyuk <pavel.dovga...@ispras.ru>

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.dovga...@ispras.ru>
Signed-off-by: Maria Klimushenkova <maria.klimushenk...@ispras.ru>
Message-id: 20180626064729.18070.47600.stgit@pasha-VirtualBox
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
 ui/sdl2.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/ui/sdl2.c b/ui/sdl2.c
index 3fff9f5b63..76e59427cc 100644
--- a/ui/sdl2.c
+++ b/ui/sdl2.c
@@ -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;
     }
 
-- 
2.9.3