Fix pause handling

cocotbext/axi/stream.py

@@ -146,8 +146,7 @@ class StreamSource(object):
             await RisingEdge(self.clock)
 
             if (ready_sample and valid_sample) or (not valid_sample):
-                if self.drive_obj:
-                    if not self.pause:
+                if self.drive_obj and not self.pause:
                     self.bus.drive(self.drive_obj)
                     self.drive_obj = None
                     self.drive_sync.set()
@@ -157,7 +156,7 @@ class StreamSource(object):
                 else:
                     if self.valid is not None:
                         self.valid <= 0
-                    self.active = False
+                    self.active = bool(self.drive_obj)
 
     async def _run(self):
         while True: