Revert r240270 ("Fixed/added namespace ending comments using clang-tidy").

llvm-svn: 240353
diff --git a/clang/lib/Analysis/ReachableCode.cpp b/clang/lib/Analysis/ReachableCode.cpp
index 795d674..8165b09 100644
--- a/clang/lib/Analysis/ReachableCode.cpp
+++ b/clang/lib/Analysis/ReachableCode.cpp
@@ -370,7 +370,7 @@
                         const Stmt *S,
                         clang::reachable_code::Callback &CB);
   };
-} // namespace
+}
 
 void DeadCodeScan::enqueue(const CFGBlock *block) {
   unsigned blockID = block->getBlockID();
@@ -676,5 +676,4 @@
   }
 }
 
-} // namespace reachable_code
-} // namespace clang
+}} // end namespace clang::reachable_code