Catch and log HttpRequestException when ViewOperation fails

Change-Id: I3484c9e26e207e2cf5a97151fa2458d8fe05c069
Reviewed-on: http://review.couchbase.org/41844
Tested-by: Jeffry Morris <jeffrymorris@gmail.com>
Reviewed-by: Brett Lawson <brett19@gmail.com>

Src/Couchbase/Views/ViewClient.cs

@@ -100,6 +100,11 @@ public IViewResult<T> Execute<T>(IViewQuery query)
                     return true;
                 });
             }
+            catch (HttpRequestException e)
+            {
+                ProcessError(e, viewResult);
+                Log.Error(e);
+            }
             return viewResult;
         }