[ekohl] 71299: [NETAPI32] Prevent dereferencing null-pointers.

Author: ekohl
Date: Mon May  9 10:26:55 2016
New Revision: 71299

URL: http://svn.reactos.org/svn/reactos?rev=71299&view=rev
Log:
[NETAPI32]
Prevent dereferencing null-pointers.

Modified:
    trunk/reactos/dll/win32/netapi32/local_group.c
    trunk/reactos/dll/win32/netapi32/user.c

Modified: trunk/reactos/dll/win32/netapi32/local_group.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/netapi32/local_gr...
==============================================================================
--- trunk/reactos/dll/win32/netapi32/local_group.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/netapi32/local_group.c	[iso-8859-1] Mon May  9 10:26:55 2016
@@ -1163,7 +1163,7 @@
 //    }

done:
-    if (ApiStatus == NERR_Success && EnumContext->Phase != DonePhase)
+    if (ApiStatus == NERR_Success && EnumContext != NULL && EnumContext->Phase != DonePhase)
         ApiStatus = ERROR_MORE_DATA;

if (EnumContext != NULL)

Modified: trunk/reactos/dll/win32/netapi32/user.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/netapi32/user.c?r...
==============================================================================
--- trunk/reactos/dll/win32/netapi32/user.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/netapi32/user.c	[iso-8859-1] Mon May  9 10:26:55 2016
@@ -2554,7 +2554,7 @@
 //    }

done:
-    if (ApiStatus == NERR_Success && EnumContext->Index < EnumContext->Count)
+    if (ApiStatus == NERR_Success && EnumContext != NULL && EnumContext->Index < EnumContext->Count)
         ApiStatus = ERROR_MORE_DATA;

if (EnumContext != NULL)