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[win32k]

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- Only call ExFreePool.. if Buffer is not NULL, which can occur if the Unicode String MessageNameUnsafe coming from user mode is incorrect. Fixes a bugcheck when using OllyDbg V2.0.

svn path=/trunk/; revision=47075
This commit is contained in:
Michael Martin 2010-05-01 13:32:38 +00:00
parent f4fd1abac0
commit 35ff67b13e
1 changed files with 2 additions and 2 deletions
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4
reactos/subsystems/win32/win32k/ntuser/window.c
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@ -4268,8 +4268,8 @@ NtUserRegisterWindowMessage(PUNICODE_STRING MessageNameUnsafe)
} }
Ret = (UINT)IntAddAtom(SafeMessageName.Buffer); Ret = (UINT)IntAddAtom(SafeMessageName.Buffer);
if (SafeMessageName.Buffer)
ExFreePoolWithTag(SafeMessageName.Buffer, TAG_STRING); ExFreePoolWithTag(SafeMessageName.Buffer, TAG_STRING);
RETURN( Ret); RETURN( Ret);
CLEANUP: CLEANUP: