rescue standard error

lib/launchy.rb

@@ -39,7 +39,7 @@ def open(uri_s, options = {}, &error_block)
       app.new.open(uri, leftover)
     rescue Launchy::Error => le
       raise le
-    rescue Exception => e
+    rescue StandardError => e
       msg = "Failure in opening uri #{uri_s.inspect} with options #{options.inspect}: #{e}"
       raise Launchy::Error, msg
     ensure