vim-patch:9.0.0124: code has more indent than needed

Problem:    Code has more indent than needed.
Solution:   Use continue and return statements. (closes vim/vim#10824)
101d57b34b

src/nvim/ex_cmds.c

@@ -5793,6 +5793,7 @@ static void do_helptags(char *dirname, bool add_help_tags, bool ignore_writeerr)
     if (len <= 4) {
       continue;
     }
+
     if (STRICMP(files[i] + len - 4, ".txt") == 0) {
       // ".txt" -> language "en"
       lang[0] = 'e';