include-prenv-before-system-dir.patch

diff -r cdd65df84242 toolkit/xre/nsXREDirProvider.cpp
--- a/toolkit/xre/nsXREDirProvider.cpp	Fri Jan 01 01:50:52 2021 +0000
+++ b/toolkit/xre/nsXREDirProvider.cpp	Sun Jan 03 10:33:28 2021 +0100
@@ -32,6 +32,7 @@
 #include "nsArrayEnumerator.h"
 #include "nsEnumeratorUtils.h"
 #include "nsReadableUtils.h"
+#include "prenv.h"
 
 #include "GeckoProfiler.h"
 #include "SpecialSystemDirectory.h"