make netDegug work with MIC_LOGGER

adding a dummy "´flush()" method to NetDebug that does nothing

wled00/net_debug.h

@@ -11,6 +11,8 @@ class NetworkDebugPrinter : public Print {
   public:
     virtual size_t write(uint8_t c);
     virtual size_t write(const uint8_t *buf, size_t s);
+    virtual void flush(void) { return;}         // WLEDMM adding flush() method - does nothing as we cannot use debugUdp.flush() which clears _input_ buffers
+    virtual void flush( bool txOnly) { return;} // WLEDMM
 };
 
 extern NetworkDebugPrinter NetDebug;