[PATCH] bitbake-setup: _has_local_modifications fix layer add on existing project

[Anibal Limon <anibal@limonsoftware.com>]

When a layer is add to the registry and previous project checkout exists,
the sources-fixed-revisions.json not has a previous revision.

Fixes:

```
  File "/workspaces/ls/meta-ls/bitbake/bin/bitbake-setup", line 1137, in <module>
    main()
    ~~~~^^
  File "/workspaces/ls/meta-ls/bitbake/bin/bitbake-setup", line 1130, in main
    args.func(top_dir, all_settings, args, d)
    ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/workspaces/ls/meta-ls/bitbake/bin/bitbake-setup", line 735, in build_update
    build_status(top_dir, settings, args, d, update=True)
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/workspaces/ls/meta-ls/bitbake/bin/bitbake-setup", line 719, in build_status
    update_build(new_upstream_config, confdir, setupdir, layerdir, d,
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                 update_bb_conf=args.update_bb_conf)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/workspaces/ls/meta-ls/bitbake/bin/bitbake-setup", line 408, in update_build
    sources_fixed_revisions = checkout_layers(layer_config, confdir, layerdir, d)
  File "/workspaces/ls/meta-ls/bitbake/bin/bitbake-setup", line 184, in checkout_layers
    elif _has_local_modifications(r_name, repodir_path):
         ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "/workspaces/ls/meta-ls/bitbake/bin/bitbake-setup", line 143, in _has_local_modifications
    rev = fixed_revisions['sources'][r_name]['git-remote']['rev']
          ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
KeyError: 'meta-freescale'
```

Signed-off-by: Anibal Limon <anibal@limonsoftware.com>
---
 bin/bitbake-setup | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/bin/bitbake-setup b/bin/bitbake-setup
index 4d709ed8c..46b2bff01 100755
--- a/bin/bitbake-setup
+++ b/bin/bitbake-setup
@@ -140,6 +140,9 @@ def checkout_layers(layers, confdir, layerdir, d):
 
     def _has_local_modifications(r_name, r_path):
         fixed_revisions = json.load(open(os.path.join(confdir, "sources-fixed-revisions.json")))
+
+        if not r_name in fixed_revisions['sources']:
+            return False
         rev = fixed_revisions['sources'][r_name]['git-remote']['rev']
         status = bb.process.run('git -C {} status --porcelain'.format(r_path))[0]
         if status:
-- 
2.51.0