fix(qemu,rdesktop): fix stray } in -W option arguments

These are leftovers in commit 08dd2cd in switching from `... -W
'${arr[@]+"${arr[@]}"}'` to `((${#arr[@]})) && ... -W '"${arr[@]}"'`

References:

akinomyoga@08dd2cd

Author: akinomyoga

completions/qemu

@@ -23,7 +23,7 @@ _comp_cmd_qemu()
             local -a keymaps
             _comp_expand_glob keymaps '/usr/{local/,}share/qemu/keymaps/!(common|modifiers)'
             ((${#keymaps[@]})) &&
-                _comp_compgen -- -W '"${keymaps[@]##*/}"}'
+                _comp_compgen -- -W '"${keymaps[@]##*/}"'
             return
             ;;
         -soundhw)

completions/rdesktop

@@ -48,7 +48,7 @@ _comp_cmd_rdesktop()
     if [[ $cur == -* ]]; then
         local opts=($(_parse_help "$1"))
         ((${#opts[@]})) &&
-            _comp_compgen -- -W '"${opts[@]%:}"}'
+            _comp_compgen -- -W '"${opts[@]%:}"'
     else
         _known_hosts_real -- "$cur"
     fi