Fix indentation size

src/_mix

@@ -126,8 +126,7 @@ _1st_arguments=(
   '--version:Prints the Elixir version information'
 )
 
-__task_list ()
-{
+__task_list () {
   local expl
   declare -a tasks
 
@@ -211,7 +210,6 @@ __task_list ()
 }
 
 local expl
-
 local curcontext="$curcontext" state line
 typeset -A opt_args
 
@@ -222,18 +220,14 @@ _arguments -C \
 case $state in
   (command)
     _describe -t commands "mix subcommand" _1st_arguments
-      return
     ;;
-
   (options)
     case $line[1] in
       (help)
         _arguments ':feature:__task_list'
-         return
         ;;
       (test|format|run)
         _arguments ':PATH:_files'
-         return
         ;;
     esac
   ;;