vim-patch:8.2.0871: cannot use getmarklist() as a method

Problem:    Cannot use getmarklist() as a method.
Solution:   Make getmarklist() work as a method.  Add one to the column
            number to match getpos(). (Yegappan Lakshmanan, closes vim/vim#6176)
f17e7ea67a

The rest of this patch was ported in:
a1ed941a78

src/nvim/eval.lua

@@ -161,7 +161,7 @@ return {
     getjumplist={args={0, 2}, base=1},
     getline={args={1, 2}, base=1},
     getloclist={args={1, 2}},
-    getmarklist={args={0, 1}},
+    getmarklist={args={0, 1}, base=1},
     getmatches={args={0, 1}},
     getmousepos={},
     getpid={},