*: Fix linter errors

src/nvim/api/vim.c

@@ -1012,7 +1012,7 @@ Dictionary nvim_parse_expression(String expr, String flags, Boolean highlight,
       2  // "ast", "len"
       + (size_t)(east.err.msg != NULL)  // "error"
       + (size_t)highlight  // "highlight"
-  );
+      + 0);
   Dictionary ret = {
     .items = xmalloc(ret_size * sizeof(ret.items[0])),
     .size = 0,

test/helpers.lua

@@ -301,10 +301,10 @@ local function mergedicts_copy(d1, d2)
   for k, v in pairs(d2) do
     if d2[k] == REMOVE_THIS then
       ret[k] = nil
-    elseif type(d1[k]) == 'table' and type(d2[k]) == 'table' then
+    elseif type(d1[k]) == 'table' and type(v) == 'table' then
-      ret[k] = mergedicts_copy(d1[k], d2[k])
+      ret[k] = mergedicts_copy(d1[k], v)
     else
-      ret[k] = d2[k]
+      ret[k] = v
     end
   end
   return ret

test/unit/charset/vim_str2nr_spec.lua

@@ -5,7 +5,6 @@ local itp = helpers.gen_itp(it)
 
 local cimport = helpers.cimport
 local ffi = helpers.ffi
-local eq = helpers.eq
 
 local shallowcopy = global_helpers.shallowcopy
 local updated = global_helpers.updated

test/unit/viml/helpers.lua

@@ -112,7 +112,6 @@ return {
   pline2lua = pline2lua,
   pstate_str = pstate_str,
   new_pstate = new_pstate,
-  intchar2lua = intchar2lua,
   conv_cmp_type = conv_cmp_type,
   pstate_set_str = pstate_set_str,
 }