Fix another issue with the log message in here. That would have looked strange indeed, in the logs.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5290 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/io/FieldMarshaller.java

@@ -76,7 +76,7 @@ public abstract class FieldMarshaller
             if (reader != null && writer != null) {
                 return new MethodFieldMarshaller(reader, writer);
             } else if (reader == null || writer == null) {
-                log.warning("Class contains one but not both custom field reader and writer" +
+                log.warning("Class contains one but not both custom field reader and writer",
                             "class", field.getDeclaringClass().getName(), "field", field.getName(),
                             "reader", reader, "writer", writer);
                 // fall through to using reflection on the fields...