Minor 3.x change wrt #631

Author: cowtowncoder

src/main/java/com/fasterxml/jackson/core/JsonParser.java

@@ -846,12 +846,8 @@ public int getText(Writer writer) throws IOException, UnsupportedOperationExcept
      *    the current token is not numeric, or if decoding of the value fails
      *    (invalid format for numbers); plain {@link IOException} if underlying
      *    content read fails (possible if values are extracted lazily)
-     *
-     * @since 2.12
      */
-    public Number getNumberValueExact() throws IOException {
-        return getNumberValue();
-    }
+    public abstract Number getNumberValueExact() throws IOException;
 
     /**
      * If current token is of type 

src/main/java/com/fasterxml/jackson/core/base/ParserMinimalBase.java

@@ -627,6 +627,11 @@ public String getValueAsString(String defaultValue) throws IOException {
         return getText();
     }
 
+    @Override
+    public Number getNumberValueExact() throws IOException {
+        return getNumberValue();
+    }
+
     /*
     /**********************************************************************
     /* Databind callbacks