Add test for deep nonexistent path

Related PR - fixing an unhandled exception in a Ruby implementation of JSON patch:
tenderlove/hana#15

Author: odlp

tests.json

@@ -465,6 +465,11 @@
       "patch": [{"op": "remove", "path": "/baz"}],
       "error": "removing a nonexistent field should fail" },
 
+    { "comment": "Removing deep nonexistent path",
+      "doc": {"foo" : "bar"},
+      "patch": [{"op": "remove", "path": "/missing1/missing2"}],
+      "error": "removing a nonexistent field should fail" },
+
     { "comment": "Removing nonexistent index",
       "doc": ["foo", "bar"],
       "patch": [{"op": "remove", "path": "/2"}],