fix for GRAILS-2462

git-svn-id: https://svn.codehaus.org/grails/trunk@6705 1cfb16fd-6d17-0410-8ff1-b7e8e1e2867d

Author: graeme

src/groovy/org/codehaus/groovy/grails/plugins/web/ControllersGrailsPlugin.groovy

@@ -179,6 +179,8 @@ class ControllersGrailsPlugin {
         def grailsEnv = GrailsUtil.getEnvironment()
 
         def mappingElement = webXml.'servlet-mapping'
+        mappingElement = mappingElement[mappingElement.size()-1]
+        
         mappingElement + {
             'servlet-mapping' {
                 'servlet-name'("grails")