Misc fixing

source/backend/engine/CarlaEngine.cpp

@@ -1376,6 +1376,7 @@ void CarlaEngine::processRack(float* inBuf[2], float* outBuf[2], const uint32_t
         plugin->initBuffers();
         plugin->process(inBuf, outBuf, frames);
 
+#if 0
         // if plugin has no audio inputs, add previous buffers
         if (plugin->audioInCount() == 0)
         {
@@ -1385,8 +1386,6 @@ void CarlaEngine::processRack(float* inBuf[2], float* outBuf[2], const uint32_t
                 outBuf[1][j] += inBuf[1][j];
             }
         }
-
-#if 0
         // if plugin has no midi output, add previous events
         if (plugin->midiOutCount() == 0)
         {

source/utils/CarlaThread.hpp

@@ -172,7 +172,20 @@ public:
 
     bool isRunning()
     {
-        return (fStarted && ! fFinished);
+        if (fStarted && ! fFinished)
+            return true;
+
+        // take the change to clear data
+#ifdef CPP11_THREAD
+        if (cthread != nullptr)
+        {
+            delete cthread;
+            cthread = nullptr;
+        }
+#else
+        _zero();
+#endif
+        return false;
     }
 
     void waitForStarted(const unsigned int timeout = 0) // ms