Minor tweaks

Author: cowtowncoder

cbor/src/main/java/com/fasterxml/jackson/dataformat/cbor/CBORParser.java

@@ -770,7 +770,9 @@ public void close() throws IOException {
             _closed = true;
             _symbols.release();
             // 30-May-2025, tatu: was missing before 2.20
-            _currToken = null;
+            if (JsonParser.Feature.CLEAR_CURRENT_TOKEN_ON_CLOSE.enabledIn(_features)) {
+                _currToken = null;
+            }
             try {
                 _closeInput();
             } finally {

ion/src/main/java/com/fasterxml/jackson/dataformat/ion/IonParser.java

@@ -254,6 +254,10 @@ public boolean isClosed() {
     @Override
     public void close() throws IOException {
         if (!_closed) {
+            // 30-May-2025, tatu: was missing before 2.20
+            if (JsonParser.Feature.CLEAR_CURRENT_TOKEN_ON_CLOSE.enabledIn(_features)) {
+                _currToken = null;
+            }
             // should only close if manage the resource
             if (_ioContext.isResourceManaged()) {
                 Object src = _ioContext.contentReference().getRawContent();
@@ -448,6 +452,10 @@ private void _verifyIsNumberToken() throws IOException
         }
     }
 
+    // NOTE: Ion implementation follows original (up to 2.19) JsonParser Javadocs
+    // behavior (if non-number, return `null`), which is different from other
+    // backends (if non-number, throw exception). But since 3.0 will switch to
+    // "return null for non-numbers", Ion behavior is retained in 2.20+.
     @Override
     public NumberType getNumberType() throws IOException
     {