fix "local variable 'start' referenced before assignment"

brozzler/worker.py

@@ -447,12 +447,12 @@ class BrozzlerWorker:
 
     def brozzle_site(self, browser, site):
         try:
+            start = time.time()
             page = None
             self._frontier.honor_stop_request(site)
             self.logger.info(
                     "brozzling site (proxy=%r) %r",
                     self._proxy_for(site), site)
-            start = time.time()
             while time.time() - start < 7 * 60:
                 site.refresh()
                 self._frontier.honor_stop_request(site)
@@ -499,6 +499,7 @@ class BrozzlerWorker:
         except:
             self.logger.critical("unexpected exception", exc_info=True)
         finally:
+            if start:
                 site.active_brozzling_time = (site.active_brozzling_time or 0) + time.time() - start
             self._frontier.disclaim_site(site, page)
 

setup.py

@@ -32,7 +32,7 @@ def find_package_data(package):
 
 setuptools.setup(
         name='brozzler',
-        version='1.1b12.dev263',
+        version='1.1b12.dev264',
         description='Distributed web crawling with browsers',
         url='https://github.com/internetarchive/brozzler',
         author='Noah Levitt',