Add a comment to the else path to describe why it saves the attribute…

… in the else path and not outside.

Fixes: SE-13618

src/main/java/sirius/pasta/tagliatelle/compiler/TemplateCompiler.java

@@ -384,6 +384,8 @@ private void parseAttributes(TagHandler handler) {
             if (attributeType == null) {
                 attributeType = String.class;
             } else {
+                // verifyAttributeNameAndType(...) already reports an error if the attributeType is unknown.
+                // We only save the found and defined attributes.
                 attributes.add(name);
             }