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[NTVDM:VBE]: Don't crash if the video mode is invalid.

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svn path=/trunk/; revision=73028
This commit is contained in:
Aleksandar Andrejevic 2016-10-23 17:21:58 +00:00
parent 6fcebba53b
commit 1ef056a0ed
1 changed files with 1 additions and 0 deletions
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reactos/subsystems/mvdm/ntvdm/bios/bios32/vbe.c
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@ -356,6 +356,7 @@ static VOID VbeSetExtendedRegisters(PSVGA_REGISTERS Registers)
BOOLEAN WINAPI VbeSetExtendedVideoMode(BYTE ModeNumber) BOOLEAN WINAPI VbeSetExtendedVideoMode(BYTE ModeNumber)
{ {
PCVBE_MODE Mode = VbeGetModeByNumber(ModeNumber); PCVBE_MODE Mode = VbeGetModeByNumber(ModeNumber);
if (Mode == NULL) return FALSE;
/* At this point, Mode->Registers shouldn't be NULL unless the mode is unimplemented */ /* At this point, Mode->Registers shouldn't be NULL unless the mode is unimplemented */
if (Mode->Registers == NULL) if (Mode->Registers == NULL)