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Fix segfault on screendump with -nographic 

When running -nographic and calling "screendump" on the monitor, qemu
segfaults. Fix the invalid pointer dereference by checking for NULL.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2011-05-26 23:50:33 +02:00
parent fbd659b76c
commit e34b12ae98
1 changed files with 1 additions and 1 deletions
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2
console.c
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@ -180,7 +180,7 @@ void vga_hw_screen_dump(const char *filename)
active_console = consoles[0]; active_console = consoles[0];
/* There is currently no way of specifying which screen we want to dump, /* There is currently no way of specifying which screen we want to dump,
so always dump the first one. */ so always dump the first one. */
if (consoles[0]->hw_screen_dump) if (consoles[0] && consoles[0]->hw_screen_dump)
consoles[0]->hw_screen_dump(consoles[0]->hw, filename); consoles[0]->hw_screen_dump(consoles[0]->hw, filename);
active_console = previous_active_console; active_console = previous_active_console;
} }