[java] Show more detailed message when can't resolve field type

pmd-java/src/main/java/net/sourceforge/pmd/lang/java/typeresolution/ClassTypeResolver.java

@@ -504,9 +504,10 @@ public class ClassTypeResolver extends JavaParserVisitorAdapter {
                 // swallow
             } catch (final LinkageError e) {
                 if (LOG.isLoggable(Level.WARNING)) {
-                    LOG.log(Level.WARNING, "Error during type resolution due to: " + e);
+                    String message = "Error during type resolution of field '" + fieldImage + "' in "
+                            + typeToSearch.getType() + " due to: " + e;
+                    LOG.log(Level.WARNING, message);
                 }
-                // TODO : report a missing class once we start doing that...
                 return null;
             }