fix nsurl references

desktop/download.h

@@ -28,6 +28,7 @@
 
 struct gui_window;
 struct llcache_handle;
+struct nsurl;
 
 /** Type of a download context */
 typedef struct download_context download_context;
@@ -74,7 +75,7 @@ void download_context_abort(download_context *ctx);
  * \param ctx Context to retrieve URL from
  * \return URL object
  */
-nsurl *download_context_get_url(const download_context *ctx);
+struct nsurl *download_context_get_url(const download_context *ctx);
 
 /**
  * Retrieve the MIME type for a download

riscos/download.c

@@ -33,6 +33,8 @@
 #include <sys/time.h>
 #include <time.h>
 #include <curl/curl.h>
+#include <libwapcaplet/libwapcaplet.h>
+
 #include "oslib/mimemap.h"
 #include "oslib/osargs.h"
 #include "oslib/osfile.h"
@@ -51,6 +53,7 @@
 #include "utils/nsurl.h"
 #include "utils/utf8.h"
 #include "utils/utils.h"
+#include "utils/corestrings.h"
 
 #include "riscos/gui.h"
 #include "riscos/dialog.h"