Fixed/added namespace ending comments using clang-tidy. NFC

The patch is generated using this command:

tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \
  -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \
  llvm/lib/


Thanks to Eugene Kosov for the original patch!

llvm-svn: 240137
diff --git a/llvm/lib/CodeGen/EdgeBundles.cpp b/llvm/lib/CodeGen/EdgeBundles.cpp
index aea7c31..f43b2f1 100644
--- a/llvm/lib/CodeGen/EdgeBundles.cpp
+++ b/llvm/lib/CodeGen/EdgeBundles.cpp
@@ -89,7 +89,7 @@
   O << "}\n";
   return O;
 }
-}
+} // namespace llvm
 
 /// view - Visualize the annotated bipartite CFG with Graphviz.
 void EdgeBundles::view() const {