Only clone when text is not empty

Author: gastaldi

src/main/java/io/fabric8/maven/MavenJDOMWriter.java

@@ -271,7 +271,7 @@ protected void insertAtPreferredLocation(Element parent, Element child, Counter
                 lastText = (Text) next;
             }
         }
-        if ((lastText != null) && (lastText.getTextTrim().isEmpty())) {
+        if ((lastText != null) && (!lastText.getTextTrim().isEmpty())) {
             lastText = lastText.clone();
         } else {
             lastText = factory.text(lineSeparator + indentation.repeat(counter.getDepth()));

src/test/java/io/fabric8/maven/MavenTest.java

@@ -362,7 +362,7 @@ void should_not_add_extra_line_break() throws Exception {
         Approvals.verify(sw.toString());
     }
 
-    @ValueSource(strings = {"extra-line-pom.xml", "extra-line-pom_alt.xml"})
+    @ValueSource(strings = { "extra-line-pom.xml", "extra-line-pom_alt.xml" })
     @ParameterizedTest
     void should_not_add_extra_line_break_alt(String inputFile) throws Exception {
         Path pom = Paths.get(getClass().getResource(inputFile).toURI());