[epiphany] Fix query handling in pdf reader

[Jan-Michael Brummer <jbrummer src gnome org>]

commit f162f980dcce760f02164f04b265f4c85e0acda9
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Fri Jul 10 17:46:25 2020 +0200

    Fix query handling in pdf reader
    
    Fixes: https://gitlab.gnome.org/GNOME/epiphany/-/issues/1235

 embed/ephy-pdf-handler.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)
---
diff --git a/embed/ephy-pdf-handler.c b/embed/ephy-pdf-handler.c
index 56ab04a1f..8940a86b7 100644
--- a/embed/ephy-pdf-handler.c
+++ b/embed/ephy-pdf-handler.c
@@ -222,21 +222,8 @@ ephy_pdf_request_start (EphyPdfRequest *request)
     g_list_prepend (request->source_handler->outstanding_requests, request);
 
   original_uri = webkit_uri_scheme_request_get_uri (request->scheme_request);
-  soup_uri = soup_uri_new (original_uri);
-
-  if (!soup_uri) {
-    /* Can't assert because user could theoretically input something weird */
-    GError *error = g_error_new (WEBKIT_NETWORK_ERROR,
-                                 WEBKIT_NETWORK_ERROR_FAILED,
-                                 _("%s is not a valid URI"),
-                                 original_uri);
-    finish_uri_scheme_request (request, NULL, error);
-    g_error_free (error);
-    return;
-  }
-
-  modified_uri = soup_uri_get_path (soup_uri);
-  g_assert (modified_uri);
+  g_assert (g_str_has_prefix (original_uri, "ephy-pdf:"));
+  modified_uri = original_uri + strlen ("ephy-pdf:");
 
   request->download = ephy_download_new_for_uri_internal (modified_uri);
   ephy_download_disable_desktop_notification (request->download);