id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
19412,Changeset 18995 can lead to Notice: Undefined index: wp_the_query,bobbingwide,,"In changeset r18995 there were two changes to query.php
The comment ""new does not require by reference"" applies to the first but not the second change.

Should the assignment by reference in wp_reset_query have been removed?

The reported problem is:
http://wordpress.org/support/topic/plugin-wordpress-seo-by-yoast-notice-undefined-index-wp_the_query?replies=2#post-2477593

I had the same problem and questioned the suggested fix. 
What I don't understand is why there is no Notice: message for the original code.

Try running this code.
{{{
<?php
error_reporting( E_ALL );  
@ini_set('display_errors',1);

function bad() {
  print_r( __FUNCTION__ );
  echo ""\n"";

  $GLOBALS = array( 'wp_query' => 'set' );
  print_r( $GLOBALS );
  unset($GLOBALS['wp_query']);
  $GLOBALS['wp_query'] = $GLOBALS['wp_the_query'];
  print_r( $GLOBALS );
  $GLOBALS['wp_query'] =& $GLOBALS['wp_the_query'];
  print_r( $GLOBALS );
}

function good() {
  print_r( __FUNCTION__ );
  echo ""\n"";
  $GLOBALS = array( 'wp_query' => 'set' );
  print_r( $GLOBALS );
  unset($GLOBALS['wp_query']);
  $GLOBALS['wp_query'] =& $GLOBALS['wp_the_query'];
  print_r( $GLOBALS );
  $GLOBALS['wp_query'] = $GLOBALS['wp_the_query'];
  print_r( $GLOBALS );
}

good();
bad();
}}}


",defect (bug),reopened,normal,Awaiting Review,Query,3.3,normal,,has-patch close,