Added Style/GuardClause suggestions

Author: honeyankit

nuget/lib/dependabot/nuget/metadata_finder.rb

@@ -121,9 +121,7 @@ def dependency_nuspec_url
         source = dependency.requirements.
                  find { |r| r&.fetch(:source) }&.fetch(:source)
 
-        if source&.key?(:nuspec_url)
-          source.fetch(:nuspec_url)
-        end
+        return source.fetch(:nuspec_url) if source&.key?(:nuspec_url)
       end
 
       def dependency_source_url