#7 do some clean up stuff at the end

src/imageJPEG.cpp

@@ -151,6 +151,7 @@ void jpegFlushFramebuffer()
 
 		// initialise the decoder to give access to image information
 		int ret = JpegDec.decodeFile("/tmp.jpeg");
+		if (ret == 1) {
 			Serial.print("decodeFile ret = ");
 			Serial.println(ret);
 
@@ -158,11 +159,14 @@ void jpegFlushFramebuffer()
 			jpegInfo();
 
 			// render the image onto the screen at coordinate 0,0
-		if (JpegDec.width > 0 && JpegDec.height) {
 			renderJPEG(0, 0);
+
 		} else {
 			Serial.println("!!!! unkown jpeg format !!!!");
 		}
+
+		// reset decoder
+		JpegDec.abort();
 	}
 }