Issue nostra13#725: Prevent NPE log

Author: nostra13

library/src/com/nostra13/universalimageloader/core/decode/BaseImageDecoder.java

@@ -43,6 +43,7 @@ public class BaseImageDecoder implements ImageDecoder {
 	protected static final String LOG_SCALE_IMAGE = "Scale subsampled image (%1$s) to %2$s (scale = %3$.5f) [%4$s]";
 	protected static final String LOG_ROTATE_IMAGE = "Rotate image on %1$d\u00B0 [%2$s]";
 	protected static final String LOG_FLIP_IMAGE = "Flip image horizontally [%s]";
+	protected static final String ERROR_NO_IMAGE_STREAM = "No stream for image [%s]";
 	protected static final String ERROR_CANT_DECODE_IMAGE = "Image can't be decoded [%s]";
 
 	protected final boolean loggingEnabled;
@@ -71,6 +72,10 @@ public Bitmap decode(ImageDecodingInfo decodingInfo) throws IOException {
 		ImageFileInfo imageInfo;
 
 		InputStream imageStream = getImageStream(decodingInfo);
+		if (imageStream == null) {
+			L.e(ERROR_NO_IMAGE_STREAM, decodingInfo.getImageKey());
+			return null;
+		}
 		try {
 			imageInfo = defineImageSizeAndRotation(imageStream, decodingInfo);
 			imageStream = resetStream(imageStream, decodingInfo);