bin/summary: Fix --raw option

I wanted to inspect a summary file the other day and was saddened to
find it was broken:

  $ ostree summary --raw
  error: No option specified; use -u to update summary

Fix the test to do the normal thing of passing just --raw without
--view. It's legal to pass --raw and --view, but it shouldn't be a
requirement.

Closes: #1336
Approved by: cgwalters

src/ostree/ot-builtin-summary.c

@@ -210,7 +210,7 @@ ostree_builtin_summary (int argc, char **argv, OstreeCommandInvocation *invocati
             return FALSE;
         }
     }
-  else if (opt_view)
+  else if (opt_view || opt_raw)
     {
       g_autoptr(GBytes) summary_data = NULL;