- fixes a bug where the scanner class doesn't have a charset CTOR on android

Author: baywet

src/main/java/com/microsoft/graph/http/CoreHttpProvider.java

@@ -592,7 +592,7 @@ private Request convertIHttpRequestToOkHttpRequest(IHttpRequest request) {
 	public static String streamToString(@Nonnull final InputStream input) {
         Objects.requireNonNull(input, "parameter input cannot be null");
 		final String endOfFile = "\\A";
-		try (final Scanner scanner = new Scanner(input, JSON_ENCODING)) {
+		try (final Scanner scanner = new Scanner(input, JSON_ENCODING.name())) {
 			scanner.useDelimiter(endOfFile);
 			if (scanner.hasNext()) {
 				return scanner.next();