Fix Parser.parseAnnotationDesc to correctly get the value

when an annotation argument is not an array
(needing no iteration to get such a value
and add the annotationArgumentNode.getValue() list).

Signed-off-by: Manoel Campos <manoelcampos@gmail.com>

Author: manoelcampos

src/main/java/com/github/markusbernhardt/xmldoclet/Parser.java

@@ -233,7 +233,7 @@ This attribute is a List (even if there is a single value).
                                 annotationArgumentNode.getValue().add(((AnnotationValue)value).getValue().toString());
                             }
                         }
-                    }
+                    } else annotationArgumentNode.getValue().add(annotationValue.getValue().toString());
                 }
                 case null -> {}
                 default -> annotationArgumentNode.getValue().add(objValue.toString());

src/test/java/com/github/markusbernhardt/xmldoclet/ClassTest.java

@@ -755,7 +755,7 @@ void testClass17() {
         assertEquals(2, argument.getValue().size());
         assertEquals("1", argument.getValue().get(0));
         assertEquals("2", argument.getValue().get(1));
-        assertTrue(argument.isPrimitive());
+        assertFalse(argument.isPrimitive());
         assertTrue(argument.isArray());
     }
 
@@ -821,8 +821,7 @@ void testClass21() {
 
         assertEquals("char", argument.getType().getQualified());
         assertEquals(1, argument.getValue().size());
-        final int ascii = 'a';
-        assertEquals(Integer.toString(ascii), argument.getValue().getFirst());
+        assertEquals("a", argument.getValue().getFirst());
         assertTrue(argument.isPrimitive());
         assertFalse(argument.isArray());
     }
@@ -839,7 +838,7 @@ void testClass22() {
 
         assertEquals("char", argument.getType().getQualified());
         assertEquals(1, argument.getValue().size());
-        assertEquals("0", argument.getValue().getFirst());
+        assertEquals("\u0000", argument.getValue().getFirst());
         assertTrue(argument.isPrimitive());
         assertFalse(argument.isArray());
     }
@@ -873,7 +872,7 @@ void testClass24() {
 
         assertEquals("int[]", argument.getType().getQualified());
         assertTrue(argument.getValue().isEmpty());
-        assertTrue(argument.isPrimitive());
+        assertFalse(argument.isPrimitive());
         assertTrue(argument.isArray());
     }
 }