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/SemaCast.cpp b/clang/lib/Sema/SemaCast.cpp
index 9ca6e4a..85d6da7 100644
--- a/clang/lib/Sema/SemaCast.cpp
+++ b/clang/lib/Sema/SemaCast.cpp
@@ -2044,7 +2044,7 @@
 
     if (!CStyle) {
       Self.CheckCompatibleReinterpretCast(SrcType, DestType,
-                                          /*isDereference=*/false, OpRange);
+                                          /*IsDereference=*/false, OpRange);
     }
 
     // C++ 5.2.10p10: [...] a reference cast reinterpret_cast<T&>(x) has the
@@ -2881,7 +2881,7 @@
   Op.OpRange = SourceRange(LPLoc, CastExpr->getEndLoc());
 
   if (getLangOpts().CPlusPlus) {
-    Op.CheckCXXCStyleCast(/*FunctionalStyle=*/ false,
+    Op.CheckCXXCStyleCast(/*FunctionalCast=*/ false,
                           isa<InitListExpr>(CastExpr));
   } else {
     Op.CheckCStyleCast();
@@ -2908,7 +2908,7 @@
   Op.DestRange = CastTypeInfo->getTypeLoc().getSourceRange();
   Op.OpRange = SourceRange(Op.DestRange.getBegin(), CastExpr->getEndLoc());
 
-  Op.CheckCXXCStyleCast(/*FunctionalStyle=*/true, /*ListInit=*/false);
+  Op.CheckCXXCStyleCast(/*FunctionalCast=*/true, /*ListInit=*/false);
   if (Op.SrcExpr.isInvalid())
     return ExprError();