vim-patch:8.2.0464: typos and other small problems

Problem:    Typos and other small problems.
Solution:   Fix the typos.  Add missing file to distribution.
2d9d409ad4

src/nvim/buffer.c

@@ -1750,6 +1750,7 @@ buf_T * buflist_new(char_u *ffname, char_u *sfname, linenr_T lnum, int flags)
       apply_autocmds(EVENT_BUFWIPEOUT, NULL, NULL, false, curbuf);
     }
     if (aborting()) {           // autocmds may abort script processing
+      xfree(ffname);
       return NULL;
     }
     if (buf == curbuf) {