fetch.py: factor out twice used var

fetch.py

@@ -108,10 +108,11 @@ def extract_urls(content, urls = None, urignore=None):
 	for a in soup.body.find_all('a'):
 		if not 'rel' in a.attrs or not 'noreferrer' in a.attrs['rel'] or a.attrs['href'] in urls: continue
 		bad = False
+		href = a.attrs['href']
 		for i in urignore:
-			if re.findall(i,a.attrs['href'], re.IGNORECASE):
+			if re.findall(i, href):
 				bad = True
 				break
-		if not bad: urls.append(a.attrs['href'])
+		if not bad: urls.append(href)
 	return urls