Refactor to move same def var before if

Author: matsubara0507

ruby/private/bundle/create_bundle_build_file.rb

@@ -252,9 +252,9 @@ def register_gem(spec, template_out, bundle_lib_paths, bundle_binaries)
     # Do not register local gems
     return if spec.source.path?
 
+    base_dir = "lib/ruby/#{ruby_version}"
     if spec.source.is_a?(Bundler::Source::Git)
       stub = spec.source.specs.find { |s| s.name == spec.name }.stub
-      base_dir = "lib/ruby/#{ruby_version}"
       gem_path = "#{base_dir}/bundler/gems/#{Pathname(stub.full_gem_path).relative_path_from(stub.base_dir)}"
       spec_path = "#{base_dir}/bundler/gems/#{Pathname(stub.loaded_from).relative_path_from(stub.base_dir)}"
 
@@ -263,7 +263,6 @@ def register_gem(spec, template_out, bundle_lib_paths, bundle_binaries)
     else
       gem_path = GEM_PATH[ruby_version, spec.name, spec.version]
       spec_path = SPEC_PATH[ruby_version, spec.name, spec.version]
-      base_dir = "lib/ruby/#{ruby_version}"
 
       # paths to register to $LOAD_PATH
       require_paths = Gem::StubSpecification.gemspec_stub(spec_path, base_dir, "#{base_dir}/gems").require_paths