move call_app! out of credential error try/catch block.

oa-enterprise/README.rdoc

@@ -25,7 +25,7 @@ See OmniAuth::Strategies::CAS::Configuration for more configuration options.
 
 == LDAP
 
-Use the LDAP strategy as a middleware in your applicaiton:
+Use the LDAP strategy as a middleware in your application:
 
     require 'omniauth/enterprise'
     use OmniAuth::Strategies::LDAP, 

oa-enterprise/lib/omniauth/strategies/ldap.rb

@@ -65,10 +65,10 @@ module OmniAuth
 
         @env['omniauth.auth'] = auth_hash
 	
-	      call_app!
       	rescue Exception => e
       	  fail!(:invalid_credentials, e)
       	end
+	      call_app!
       end      
       
       def auth_hash