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/Parse/ParseExpr.cpp b/clang/lib/Parse/ParseExpr.cpp
index b5c01fe..7a0c07b 100644
--- a/clang/lib/Parse/ParseExpr.cpp
+++ b/clang/lib/Parse/ParseExpr.cpp
@@ -1770,7 +1770,7 @@
       if (Tok.is(tok::code_completion)) {
         tok::TokenKind CorrectedOpKind =
             OpKind == tok::arrow ? tok::period : tok::arrow;
-        ExprResult CorrectedLHS(/*IsInvalid=*/true);
+        ExprResult CorrectedLHS(/*Invalid=*/true);
         if (getLangOpts().CPlusPlus && OrigLHS) {
           const bool DiagsAreSuppressed = Diags.getSuppressAllDiagnostics();
           Diags.setSuppressAllDiagnostics(true);
@@ -2052,7 +2052,7 @@
   if (isCastExpr)
     return Actions.ActOnUnaryExprOrTypeTraitExpr(OpTok.getLocation(),
                                                  ExprKind,
-                                                 /*isType=*/true,
+                                                 /*IsType=*/true,
                                                  CastTy.getAsOpaquePtr(),
                                                  CastRange);
 
@@ -2063,7 +2063,7 @@
   if (!Operand.isInvalid())
     Operand = Actions.ActOnUnaryExprOrTypeTraitExpr(OpTok.getLocation(),
                                                     ExprKind,
-                                                    /*isType=*/false,
+                                                    /*IsType=*/false,
                                                     Operand.get(),
                                                     CastRange);
   return Operand;
@@ -3055,7 +3055,7 @@
                                      /*IsAmbiguous=*/false,
                                      /*RParenLoc=*/NoLoc,
                                      /*ArgInfo=*/nullptr,
-                                     /*NumArgs=*/0,
+                                     /*NumParams=*/0,
                                      /*EllipsisLoc=*/NoLoc,
                                      /*RParenLoc=*/NoLoc,
                                      /*RefQualifierIsLvalueRef=*/true,