[MJAVADOC-512] - Even when <javadocVersion>1.8.0</javadocVersion> mat…

…ches there still is a warning.

 o Followup seemed to be that I have missed something during the merge.

   Signed-off-by: Karl Heinz Marbaise <khmarbaise@apache.org>

src/main/java/org/apache/maven/plugins/javadoc/AbstractJavadocMojo.java

@@ -3782,7 +3782,7 @@ private void setFJavadocVersion( File jExecutable )
                 throw new MavenReportException( "Unable to parse javadoc version: " + e.getMessage(), e );
             }
 
-            if ( javadocRuntimeVersion != jVersion && getLog().isWarnEnabled() )
+            if ( javadocRuntimeVersion.compareTo( jVersion ) != 0 && getLog().isWarnEnabled() )
             {
                 getLog().warn( "Are you sure about the <javadocVersion/> parameter? It seems to be " + jVersion );
             }