[URLMON] Fix a LARGE_INTEGER truncation

[Rolf Kalbermatter]

Changelog
   - dlls/urlmon/umstream.c
     Fix a LARGE_INTEGER truncation 

License: X11, LGPL

Rolf Kalbermatter

Index: dlls/urlmon/umstream.c
===================================================================
RCS file: /home/wine/wine/dlls/urlmon/umstream.c,v
retrieving revision 1.4
diff -u -r1.4 umstream.c
--- dlls/urlmon/umstream.c	12 Dec 2005 12:46:22 -0000	1.4
+++ dlls/urlmon/umstream.c	5 Jan 2006 10:52:47 -0000
@@ -252,27 +252,28 @@
     return E_NOTIMPL;
 }
 
-static HRESULT WINAPI IStream_fnSeek (       IStream * iface,
+static HRESULT WINAPI IStream_fnSeek (IStream * iface,
                                    LARGE_INTEGER dlibMove,
                                    DWORD dwOrigin,
                                    ULARGE_INTEGER* plibNewPosition)
 {
-    DWORD pos, newposlo;
+    DWORD newposlo;
     LONG newposhi;
 
     IUMCacheStream *This = (IUMCacheStream *)iface;
 
     TRACE("(%p)\n",This);
 
-    pos = dlibMove.QuadPart; /* FIXME: truncates */
-    newposhi = 0;
-    newposlo = SetFilePointer( This->handle, pos, &newposhi, dwOrigin );
+    newposhi = dlibMove.u.HighPart;
+    newposlo = SetFilePointer( This->handle, dlibMove.u.LowPart, &newposhi, dwOrigin );
     if( newposlo == INVALID_SET_FILE_POINTER && GetLastError())
        return E_FAIL;
 
-    if (plibNewPosition)
-        plibNewPosition->QuadPart = newposlo | ( (LONGLONG)newposhi<<32);
-
+    if (plibNewPosition)
+	{
+        plibNewPosition->u.LowPart = newposlo;
+		plibNewPosition->u.HighPart = newposhi;
+	}
     return S_OK;
 }
 
@@ -283,7 +284,7 @@
 
     TRACE("(%p)\n",This);
 
-    if( ! SetFilePointer( This->handle, libNewSize.QuadPart, NULL, FILE_BEGIN ) )
+    if( ! SetFilePointer( This->handle, libNewSize.u.LowPart, &(libNewSize.u.HighPart), FILE_BEGIN ) )
        return E_FAIL;
 
     if( ! SetEndOfFile( This->handle ) )