patch 8.0.1377: cannot call a dict function in autoloaded dict

Problem:    Cannot call a dict function in autoloaded dict.
Solution:   Call get_lval() passing the read-only flag.
diff --git a/src/testdir/sautest/autoload/globone.vim b/src/testdir/sautest/autoload/globone.vim
new file mode 100644
index 0000000..98c9a10
--- /dev/null
+++ b/src/testdir/sautest/autoload/globone.vim
@@ -0,0 +1 @@
+" used by Test_globpath()