advapi32: fix LsaQueryInformationPolicy HeapAlloc bug

[Robert Reif]

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Index: dlls/advapi32/lsa.c
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RCS file: /home/wine/wine/dlls/advapi32/lsa.c,v
retrieving revision 1.8
diff -p -u -r1.8 lsa.c
--- dlls/advapi32/lsa.c	23 May 2006 12:47:28 -0000	1.8
+++ dlls/advapi32/lsa.c	11 Jul 2006 23:49:41 -0000
@@ -421,7 +421,7 @@ NTSTATUS WINAPI LsaQueryInformationPolic
 
             SID_IDENTIFIER_AUTHORITY localSidAuthority = {SECURITY_NT_AUTHORITY};
 
-            struct di * xdi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(xdi));
+            struct di * xdi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*xdi));
             HKEY key;
             BOOL useDefault = TRUE;
             LONG ret;