fix css for same code

public/ng/less/gogs/repository.less

@@ -657,6 +657,11 @@
                         background-color: #ffffdd !important;
                     }
                 }
+                &.same-code {
+                    td.selected-line, td.selected-line pre {
+                        background-color: #ffffdd !important;
+                    }
+                }
                 &.del-code {
                     td, pre {
                         background-color: #ffe2dd !important;