style(tar): reformat with shfmt 3.5.1

Author: scop

completions/tar

@@ -383,8 +383,7 @@ __tar_adjust_PREV_from_old_option()
     # deal with old style arguments here
     # $ tar cfTC # expects this sequence of arguments:
     # $ tar cfTC ARCHIVE_FILE PATTERNS_FILE CHANGE_DIR
-    if ((old_opt_used == 1 && cword > 1 && \
-        cword < ${#old_opt_parsed[@]} + 2)); then
+    if ((old_opt_used == 1 && cword > 1 && cword < ${#old_opt_parsed[@]} + 2)); then
         # make e.g. 'C' option from 'cffCT'
         prev="-${old_opt_parsed[cword - 2]}"
     fi