Fix an exception when trying to report a non-referenced recursedeps entry

Problem originally introduced in https://chromium-review.googlesource.com/c/440945/

BUG=685443

Change-Id: I16313bc7c09b0dd68c6ad118004f9d5cdfec0ddd
Reviewed-on: https://chromium-review.googlesource.com/440394
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@chromium.org>

gclient.py

@@ -694,7 +694,7 @@ class Dependency(gclient_utils.WorkItem, DependencySettings):
         if name not in deps:
           raise gclient_utils.Error(
               'ParseDepsFile(%s): recursedeps contains entry, '
-              'that is not referenced in deps: %s' % name)
+              'that is not referenced in deps: %s' % (self.name, name))
 
     # Convert the deps into real Dependency.
     deps_to_add = []