[tfaber] 62965: [WIN32K] - Avoid assigning a nonvolatile variable inside a try block. Spotted by Timo. CORE-8094

Author: tfaber
Date: Fri Apr 25 12:34:17 2014
New Revision: 62965

URL: http://svn.reactos.org/svn/reactos?rev=62965&view=rev
Log:
[WIN32K]
- Avoid assigning a nonvolatile variable inside a try block. Spotted by Timo.
CORE-8094

Modified:
    trunk/reactos/win32ss/user/ntuser/winsta.c

Modified: trunk/reactos/win32ss/user/ntuser/winsta.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/winsta....
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/winsta.c	[iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/winsta.c	[iso-8859-1] Fri Apr 25 12:34:17 2014
@@ -736,6 +736,9 @@
    }

Exit:
+   if (Status == STATUS_SUCCESS && nLength < nDataSize)
+      Status = STATUS_BUFFER_TOO_SMALL;
+
    _SEH2_TRY
    {
       if (nLengthNeeded)
@@ -745,10 +748,7 @@
       if (Status == STATUS_SUCCESS)
       {
          TRACE("Trying to copy data to caller (len = %lu, len needed = %lu)\n", nLength, nDataSize);
-         if (nLength >= nDataSize)
-            RtlCopyMemory(pvInformation, pvData, nDataSize);
-         else
-            Status = STATUS_BUFFER_TOO_SMALL;
+         RtlCopyMemory(pvInformation, pvData, nDataSize);
       }
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)