Fix static analysis

db/importers/common_metrics_importer.rb

@@ -13,7 +13,7 @@ module Importers
       # custom groups
       business: 0,
       response: 1,
-      system: 2,
+      system: 2
     }
 
     scope :common, -> { where(common: true) }
@@ -80,7 +80,7 @@ module Importers
         query: query['query_range'],
         unit: query['unit'])
 
-      blk.call(query['id'], attributes)
+      yield(query['id'], attributes)
     end
 
     def find_or_build_metric!(id)