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/ParseObjc.cpp b/clang/lib/Parse/ParseObjc.cpp
index a8d6f7f..8937a09 100644
--- a/clang/lib/Parse/ParseObjc.cpp
+++ b/clang/lib/Parse/ParseObjc.cpp
@@ -3194,15 +3194,15 @@
         if (SuperLoc.isValid())
           Actions.CodeCompleteObjCSuperMessage(getCurScope(), SuperLoc,
                                                KeyIdents,
-                                               /*AtArgumentEpression=*/true);
+                                               /*AtArgumentExpression=*/true);
         else if (ReceiverType)
           Actions.CodeCompleteObjCClassMessage(getCurScope(), ReceiverType,
                                                KeyIdents,
-                                               /*AtArgumentEpression=*/true);
+                                               /*AtArgumentExpression=*/true);
         else
           Actions.CodeCompleteObjCInstanceMessage(getCurScope(), ReceiverExpr,
                                                   KeyIdents,
-                                                  /*AtArgumentEpression=*/true);
+                                                  /*AtArgumentExpression=*/true);
 
         cutOffParsing();
         return ExprError();
@@ -3232,15 +3232,15 @@
         if (SuperLoc.isValid())
           Actions.CodeCompleteObjCSuperMessage(getCurScope(), SuperLoc,
                                                KeyIdents,
-                                               /*AtArgumentEpression=*/false);
+                                               /*AtArgumentExpression=*/false);
         else if (ReceiverType)
           Actions.CodeCompleteObjCClassMessage(getCurScope(), ReceiverType,
                                                KeyIdents,
-                                               /*AtArgumentEpression=*/false);
+                                               /*AtArgumentExpression=*/false);
         else
           Actions.CodeCompleteObjCInstanceMessage(getCurScope(), ReceiverExpr,
                                                   KeyIdents,
-                                                /*AtArgumentEpression=*/false);
+                                                /*AtArgumentExpression=*/false);
         cutOffParsing();
         return ExprError();
       }