Correct swift reraising of exception

When an exception was caught and rethrown, it should call 'raise'
without any arguments because it shows the place where an exception
occured initially instead of place where the exception re-raised.

Change-Id: I783a2a65f3e38a23ba49b6ae5a2f56a5fdaac2fc

swift/common/middleware/x_profile/html_viewer.py

@@ -386,8 +386,8 @@ class HTMLViewer(object):
             else:
                 data = stats.print_stats()
             return data, [('content-type', self.format_dict[output_format])]
-        except ODFLIBNotInstalled as ex:
-            raise ex
+        except ODFLIBNotInstalled:
+            raise
         except Exception as ex:
             raise ProfileException(_('Data download error: %s') % ex)
 

swift/container/sync.py

@@ -429,8 +429,6 @@ class ContainerSync(Daemon):
                         sync_stage_time = time()
                     self.container_syncs += 1
                     self.logger.increment('syncs')
-                except Exception as ex:
-                    raise ex
                 finally:
                     self.container_report(start_at, sync_stage_time,
                                           sync_point1,