fix mplayer typecheck

anki/sound.py

@@ -186,6 +186,9 @@ mplayerClear = False
 
 class MplayerMonitor(threading.Thread):
 
+    mplayer = None
+    deadPlayers: List[subprocess.Popen] = []
+
     def run(self):
         global mplayerClear
         self.mplayer = None
@@ -206,7 +209,7 @@ class MplayerMonitor(threading.Thread):
             while mplayerQueue:
                 # ensure started
                 if not self.mplayer:
-                    self.startProcess()
+                    self.mplayer = self.startProcess()
                 # pop a file
                 try:
                     item = mplayerQueue.pop(0)
@@ -226,7 +229,7 @@ class MplayerMonitor(threading.Thread):
                     # mplayer has quit and needs restarting
                     self.deadPlayers.append(self.mplayer)
                     self.mplayer = None
-                    self.startProcess()
+                    self.mplayer = self.startProcess()
                     self.mplayer.stdin.write(cmd)
                     self.mplayer.stdin.flush()
                 # if we feed mplayer too fast it loses files
@@ -256,7 +259,7 @@ class MplayerMonitor(threading.Thread):
         try:
             cmd = mplayerCmd + ["-slave", "-idle"]
             cmd, env = _packagedCmd(cmd)
-            self.mplayer = subprocess.Popen(
+            return subprocess.Popen(
                 cmd, startupinfo=si, stdin=subprocess.PIPE,
                 stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
                 env=env)