export.sh: Make sure umask is not too restrictive (PR22742)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230977 91177308-0d34-0410-b5e6-96231b3b80d8

utils/release/export.sh

@@ -79,5 +79,8 @@ if [ "x$release" = "x" ]; then
     exit 1
 fi
 
+# Make sure umask is not overly restrictive.
+umask 0022
+
 export_sources
 exit 0