repopick: Fallback to name when project path is empty

When a manifest project path and project name is identical, the
repo manifest parser returns None for the project path. Since
both name and path are required, fall back to using name for path
when path is None.

Change-Id: I2fb3cc0cc643808a3049171804742f249d737679

build/tools/repopick.py

@@ -251,7 +251,8 @@ def fetch_query(remote_url, query):
 
     for project in projects:
         name = project.get('name')
-        path = project.get('path')
+        # when name and path are equal, "repo manifest" doesn't return a path at all, so fall back to name
+        path = project.get('path', name)
         revision = project.get('revision')
         if revision is None:
             for remote in remotes: