Merge pull request sinatra#999 from lucasdavila/show-exceptions-refac…

…toring

Some refactoring on ShowExceptions class.

lib/sinatra/show_exceptions.rb

@@ -24,23 +24,25 @@ def call(env)
 
       if prefers_plain_text?(env)
         content_type = "text/plain"
-        exception_string = dump_exception(e)
+        exception = dump_exception(e)
       else
         content_type = "text/html"
-        exception_string = pretty(env, e)
+        exception = pretty(env, e)
       end
 
       env["rack.errors"] = errors
 
       # Post 893a2c50 in rack/rack, the #pretty method above, implemented in
       # Rack::ShowExceptions, returns a String instead of an array.
-      body = Array(exception_string)
+      body = Array(exception)
 
       [
         500,
-       {"Content-Type" => content_type,
-        "Content-Length" => Rack::Utils.bytesize(body.join).to_s},
-       body
+        {
+          "Content-Type" => content_type,
+          "Content-Length" => Rack::Utils.bytesize(body.join).to_s
+        },
+        body
       ]
     end