[clangd] fix unintended fallthrough in scope-based scoring

llvm-svn: 334170
diff --git a/clang-tools-extra/clangd/Quality.cpp b/clang-tools-extra/clangd/Quality.cpp
index a5e0f85..ba45395 100644
--- a/clang-tools-extra/clangd/Quality.cpp
+++ b/clang-tools-extra/clangd/Quality.cpp
@@ -216,10 +216,13 @@
       break;
     case FileScope:
       Score *= 1.5;
+      break;
     case ClassScope:
       Score *= 2;
+      break;
     case FunctionScope:
       Score *= 4;
+      break;
     }
   }