context path can be empty, so a better rendering is needed.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@23429 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/util/DoubleLaunchChecker.java

@@ -127,7 +127,7 @@ public class DoubleLaunchChecker {
         String contextPath="";
         try {
             Method m = ServletContext.class.getMethod("getContextPath");
-            contextPath=(String)m.invoke(h.servletContext);
+            contextPath=" contextPath=\""+m.invoke(h.servletContext)+"\"";
         } catch (Exception e) {
             // maybe running with Servlet 2.4
         }