vim-patch:7.4.2220

Problem:    printf() gives an error when the argument for %s is not a string.
            (Ozaki Kiichi)
Solution:   Behave like invoking string() on the argument. (Ken Takata)

e5a8f35b42

src/nvim/version.c

@@ -220,7 +220,7 @@ static int included_patches[] = {
   // 2223,
   // 2222,
   // 2221,
-  // 2220,
+  2220,
   2219,
   // 2218 NA
   2217,