416787 StringIndexOutOfBounds with a pathMap of ""

jetty-http/src/main/java/org/eclipse/jetty/http/PathMap.java

@@ -401,6 +401,9 @@ public class PathMap<O> extends HashMap<String,O>
     public static boolean match(String pathSpec, String path, boolean noDefault)
         throws IllegalArgumentException
     {
+        if (pathSpec.length()==0)
+            return "/".equals(path);
+            
         char c = pathSpec.charAt(0);
         if (c=='/')
         {

jetty-http/src/test/java/org/eclipse/jetty/http/PathMapTest.java

@@ -138,6 +138,8 @@ public class PathMapTest
         assertTrue("!match *.foo", !PathMap.match("*.foo", "anything.bar"));
 
         assertEquals("match / with ''", "10", p.getMatch("/").getValue());
+        
+        assertTrue("match \"\"", PathMap.match("", "/"));
     }
 
     /**