Fix for issue 130 (#131)

* Failure test case for issue #130

* Use the wildcard to match the uri if the uri match returns null
Fix for issue #130

swim-java/swim-runtime/swim-core/swim.uri/src/main/java/swim/uri/UriPathMapping.java

@@ -79,7 +79,8 @@ T get(UriPath path, UriQuery query, UriFragment fragment) {
       if (mapping == null) {
         mapping = this.wildcard;
       }
-      return mapping.get(path.tail(), query, fragment);
+      final T result = mapping.get(path.tail(), query, fragment);
+      return result != null ? result : this.wildcard.get(path.tail(), query, fragment);
     } else {
       return this.terminal.get(query, fragment);
     }

swim-java/swim-runtime/swim-core/swim.uri/src/test/java/swim/uri/UriMapperSpec.java

@@ -149,6 +149,7 @@ public void mapMultipleUriAndUriVariablePaths() {
 
     assertEquals(mapper.get("/a/x"), "AX");
     assertEquals(mapper.get("/a/b/c/d"), "ABCD");
+    assertEquals(mapper.get("/a/x/c/d"), "ABCD");
   }
 
   @Test