[pschweitzer] 58916: [NTOSKRNL] Prevent potential double free in loop. Fixes CID 732510

Author: pschweitzer
Date: Fri May  3 19:31:03 2013
New Revision: 58916

URL: http://svn.reactos.org/svn/reactos?rev=58916&view=rev
Log:
[NTOSKRNL]
Prevent potential double free in loop.
Fixes CID 732510

Modified:
    trunk/reactos/ntoskrnl/io/iomgr/error.c

Modified: trunk/reactos/ntoskrnl/io/iomgr/error.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/iomgr/error.c?…
==============================================================================
--- trunk/reactos/ntoskrnl/io/iomgr/error.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/io/iomgr/error.c	[iso-8859-1] Fri May  3 19:31:03 2013
@@ -367,7 +367,11 @@
         DeviceNameLength += sizeof(WCHAR);
 
         /* Free the buffer if we had one */
-        if (PoolObjectNameInfo) ExFreePool(PoolObjectNameInfo);
+        if (PoolObjectNameInfo)
+        {
+            ExFreePool(PoolObjectNameInfo);
+            PoolObjectNameInfo = NULL;
+        }
 
         /* Go to the next string buffer position */
         ErrorMessage->EntryData.NumberOfStrings++;
@@ -428,7 +432,7 @@
             break;
         }
 
-        /* Derefernece the device object */
+        /* Dereference the device object */
         if (LogEntry->DeviceObject) ObDereferenceObject(LogEntry->DeviceObject);
         if (DriverObject) ObDereferenceObject(LogEntry->DriverObject);