vim-patch:7.4.1980

Problem:    'errorformat' is parsed for every call to ":caddexpr".  Can't add
            to two location lists asynchronously.
Solution:   Keep the previously parsed data when appropriate. (mostly by
            Yegappan Lakshmanan)

361c8f0e51

src/nvim/version.c

@@ -460,7 +460,7 @@ static int included_patches[] = {
   // 1983 NA
   // 1982 NA
   // 1981,
-  // 1980,
+  1980,
   // 1979,
   // 1978,
   // 1977,