https://bugzilla.wikimedia.org/show_bug.cgi?id=34762

       Web browser: ---
             Bug #: 34762
           Summary: Patching DatabaseMysql.php's close to meet
                    specification
           Product: MediaWiki
           Version: 1.20-svn
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: Unprioritized
         Component: Database
        AssignedTo: wikibugs-l@lists.wikimedia.org
        ReportedBy: christ...@quelltextlich.at
    Classification: Unclassified
   Mobile Platform: ---


Created attachment 10120
  --> https://bugzilla.wikimedia.org/attachment.cgi?id=10120
Resetting mConn upon closing MySQL database connection

The documentation of the close function in includesDatabase.php:730--736 says
that 'close' should return true, when called for an already closed connection.

Calling close on an already closed DatabaseMysql object fails, by something
like:
-----8<------
PHP Warning:  mysql_close(): 4 is not a valid MySQL-Link resource in
/home/christian/sources/Wikimedia/shreddingPHPUnit/dummy.php on line 13

Warning: mysql_close(): 4 is not a valid MySQL-Link resource in
/home/christian/sources/Wikimedia/shreddingPHPUnit/dummy.php on line 13
-----8<------

The problem seems to be that mConn is not cleared upon closing DatabaseMysql.

The attached patch resolves this issue.

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