SyntaxError: missing ; before statement

The Plugin works correctly but shows two errors within the browser console when i enable the plugin.

When i enable the plugin i noticed these two errors.

SCRIPT1004: Expected ‘;’
http://www.mijngps.com (1,73772)

SCRIPT1004: Expected ‘;’
http://www.mijngps.com (1,75330)

SyntaxError: missing ; before statement

https://docs.microsoft.com/en-us/scripting/javascript/misc/expected-semicolon

I Narrowed it down to this portion within preventer-index.php

<script id="wpcp_disable_Right_Click" type="text/javascript">
//<![CDATA[
document.ondragstart = function() { return false;}
/* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Disable context menu on images by GreenLava Version 1.0
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ */
function nocontext(e) {
return false;
}
document.oncontextmenu = nocontext;
//]]>
</script>

http://www.webtoolkitonline.com/javascript-tester.html shows the error.

Any idear how i can fix these two errors ?

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