Fix: Status of db hanlder not modified on disconnect

htdocs/lib/databases/mysqli.lib.php

@@ -282,14 +282,19 @@ class DoliDb
 
 
 	/**
-	 *	\brief      Fermeture d'une connexion vers une database.
-	 *	\return	    resource
-	 *	\seealso	connect
+	 *	Close database connexion
+	 *	@return	    boolean     True if disconnect successfull, false otherwise
+	 *	@see    	connect
 	 */
 	function close()
 	{
-		dol_syslog("DoliDB::disconnect",LOG_DEBUG);
-		return $this->db?mysqli_close($this->db):0;
+	    if ($this->db)
+	    {
+		  //dol_syslog("DoliDB::disconnect",LOG_DEBUG);
+		  $this->connected=0;
+		  return mysqli_close($this->db);
+	    }
+		return false;
 	}
 
 
@@ -1004,8 +1009,8 @@ class DoliDb
 		return -1;
 		else
 		return 1;
-	}	
-	
+	}
+
 	/**
 	 *	\brief      Drop a field in table
 	 *	\param	    table 			Nom de la table