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Use FILE_MAP_ALL_ACCESS rather than FILE_MAP_READ when mmapping files
under Windows (thanks entryway)

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 1177

--- a/src/w_file_win32.c

+++ b/src/w_file_win32.c

@@ -60,7 +60,9 @@

         return;

     }

-    wad->wad.mapped = MapViewOfFile(wad->handle_map, FILE_MAP_READ, 0, 0, 0);

+    wad->wad.mapped = MapViewOfFile(wad->handle_map,

+                                    FILE_MAP_ALL_ACCESS,

+                                    0, 0, 0);

     if (wad->wad.mapped == NULL)

     {