typo in lib/pagelib.php

small typo in "page_generic_activity" class in "lib/pagelib.php" (around line 565).

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change this:
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$this->activityrecord = get_record($this->activityname, 'id', $this->id);
if(empty($this->courserecord))

{ error('Cannot fully initialize page: invalid '.$this->activityname.' id '. $this->id); }

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to this:
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$this->activityrecord = get_record($this->activityname, 'id', $this->id);
if(empty($this->activityrecord))

{ error('Cannot fully initialize page: invalid '.$this->activityname.' id '. $this->id); }

i.e. change "courserecord" to "activityrecord"