libcamera: yaml_parser: Extend YamlObject::size() to dictionaries

Dictionaries have a size too, extend the size() function to support
them.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

test/yaml-parser.cpp

@@ -421,6 +421,11 @@ protected:
 			return TestFail;
 		}
 
+		if (dictObj.size() != 3) {
+			cerr << "Dictionary object parse with wrong size" << std::endl;
+			return TestFail;
+		}
+
 		auto memeberNames = dictObj.memberNames();
 		sort(memeberNames.begin(), memeberNames.end());