[bugfix] Fix license header issue

Author: adamretter

exist-core/pom.xml

@@ -679,6 +679,7 @@
                                 <!--
                                     Already under LGPL 2.1, but with a different Copyright
                                 -->
+                                <exclude>src/main/java/org/exist/dom/persistent/XMLDeclarationImpl.java</exclude>
                                 <exclude>src/main/java/org/exist/resolver/ResolverFactory.java</exclude>
                                 <exclude>src/main/java/org/exist/resolver/XercesXmlResolverAdapter.java</exclude>
                                 <exclude>src/main/java/org/exist/util/UTF8.java</exclude>
@@ -831,6 +832,7 @@ The original license statement is also included below.]]></preamble>
                             -->
                             <header>${project.parent.relativePath}/FDB-backport-LGPL-21-ONLY-license.template.txt</header>
                             <includes>
+                                <include>src/main/java/org/exist/dom/persistent/XMLDeclarationImpl.java</include>
                                 <include>src/main/java/org/exist/resolver/ResolverFactory.java</include>
                                 <include>src/main/java/org/exist/resolver/XercesXmlResolverAdapter.java</include>
                                 <include>src/test/java/org/exist/storage/MoveCollectionTest.java</include>