[OE-core][PATCH] checklayer: Skip layers without a collection

["Joshua Watt" <JPEWhacker@gmail.com>]

As in other places in the file, skip layers that don't define a
collection when searching for a layer to resolve a dependency. Fixes
KeyError exceptions when attempting to access the layer collections
later

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
---
 scripts/lib/checklayer/__init__.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/lib/checklayer/__init__.py b/scripts/lib/checklayer/__init__.py
index 5aeec2f00f..1138000275 100644
--- a/scripts/lib/checklayer/__init__.py
+++ b/scripts/lib/checklayer/__init__.py
@@ -143,6 +143,9 @@ def detect_layers(layer_directories, no_auto):
 
 def _find_layer_depends(depend, layers):
     for layer in layers:
+        if 'collections' not in layer:
+            continue
+
         for collection in layer['collections']:
             if depend == collection:
                 return layer
-- 
2.17.1