Fix parameter name comments using clang-tidy. NFC.

This patch applies clang-tidy's bugprone-argument-comment tool
to LLVM, clang and lld source trees. Here is how I created this
patch:

$ git clone https://github.com/llvm/llvm-project.git
$ cd llvm-project
$ mkdir build
$ cd build
$ cmake -GNinja -DCMAKE_BUILD_TYPE=Debug \
    -DLLVM_ENABLE_PROJECTS='clang;lld;clang-tools-extra' \
    -DCMAKE_EXPORT_COMPILE_COMMANDS=On -DLLVM_ENABLE_LLD=On \
    -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ ../llvm
$ ninja
$ parallel clang-tidy -checks='-*,bugprone-argument-comment' \
    -config='{CheckOptions: [{key: StrictMode, value: 1}]}' -fix \
    ::: ../llvm/lib/**/*.{cpp,h} ../clang/lib/**/*.{cpp,h} ../lld/**/*.{cpp,h}

llvm-svn: 366177
diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index b669929..222d042 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -6000,7 +6000,7 @@
         CollapseLoopCountExpr->EvaluateAsInt(Result, SemaRef.getASTContext())) {
       NestedLoopCount = Result.Val.getInt().getLimitedValue();
     } else {
-      Built.clear(/*size=*/1);
+      Built.clear(/*Size=*/1);
       return 1;
     }
   }
@@ -6022,7 +6022,7 @@
       }
       OrderedLoopCount = Result.getLimitedValue();
     } else {
-      Built.clear(/*size=*/1);
+      Built.clear(/*Size=*/1);
       return 1;
     }
   }