Fixes #62

Fixed popping context when write(JsonValue value) is invoked after writeKey(String key) on JsonGeneratorImpl with a json number passed as value in.

Author: Roman Grigoriadi

impl/src/main/java/org/glassfish/json/JsonGeneratorImpl.java

@@ -293,6 +293,7 @@ public JsonGenerator write(JsonValue value) {
             case NUMBER:
                 JsonNumber number = (JsonNumber)value;
                 writeValue(number.toString());
+                popFieldContext();
                 break;
             case TRUE:
                 write(true);