[APPHELP] Fix a possible out of bounds write.

svn path=/trunk/; revision=71489

diff --git a/reactos/dll/appcompat/apphelp/sdbwrite.c b/reactos/dll/appcompat/apphelp/sdbwrite.c
index 127e50f..b4e70f5 100644 (file)
--- a/reactos/dll/appcompat/apphelp/sdbwrite.c
+++ b/reactos/dll/appcompat/apphelp/sdbwrite.c
@@ -272,13 +272,14 @@ BOOL WINAPI SdbWriteBinaryTagFromFile(PDB db, TAG tag, LPCWSTR path)
 TAGID WINAPI SdbBeginWriteListTag(PDB db, TAG tag)
 {
     TAGID list_id;
+    DWORD dum = 0;
 
     if (!SdbpCheckTagType(tag, TAG_TYPE_LIST))
         return TAGID_NULL;
 
     list_id = db->write_iter;
     SdbpWrite(db, &tag, sizeof(TAG));
-    db->write_iter += sizeof(DWORD); /* reserve some memory for storing list size */
+    SdbpWrite(db, &dum, sizeof(dum)); /* reserve some memory for storing list size */
     return list_id;
 }