Remove unused variables.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147260 91177308-0d34-0410-b5e6-96231b3b80d8

lib/ARCMigrate/FileRemapper.cpp

@@ -61,8 +61,7 @@ bool FileRemapper::initFromDisk(StringRef outputDir, DiagnosticsEngine &Diag,
   std::vector<std::pair<const FileEntry *, const FileEntry *> > pairs;
   
   llvm::OwningPtr<llvm::MemoryBuffer> fileBuf;
-  if (llvm::error_code ec = llvm::MemoryBuffer::getFile(infoFile.c_str(),
-                                                        fileBuf))
+  if (llvm::MemoryBuffer::getFile(infoFile.c_str(), fileBuf))
     return report("Error opening file: " + infoFile, Diag);
   
   SmallVector<StringRef, 64> lines;

lib/Frontend/ASTUnit.cpp

@@ -2406,7 +2406,7 @@ CXSaveError ASTUnit::Save(StringRef File) {
   if (Out.has_error())
     return CXSaveError_Unknown;
 
-  if (llvm::error_code ec = llvm::sys::fs::rename(TempPath.str(), File)) {
+  if (llvm::sys::fs::rename(TempPath.str(), File)) {
     bool exists;
     llvm::sys::fs::remove(TempPath.str(), exists);
     return CXSaveError_Unknown;

lib/Parse/ParseExprCXX.cpp

@@ -785,7 +785,7 @@ ExprResult Parser::ParseLambdaExpressionAfterIntroducer(
                                Scope::BreakScope | Scope::ContinueScope |
                                Scope::DeclScope);
 
-    StmtResult Stmt(ParseCompoundStatementBody());
+    ParseCompoundStatementBody();
 
     BodyScope.Exit();
   } else {

lib/Sema/SemaDecl.cpp

@@ -6527,7 +6527,6 @@ void Sema::CheckCompleteVariableDeclaration(VarDecl *var) {
       Diag(var->getLocation(), diag::warn_global_constructor)
         << Init->getSourceRange();
 
-    QualType Type = var->getType();
     if (var->isConstexpr()) {
       llvm::SmallVector<PartialDiagnosticAt, 8> Notes;
       if (!var->evaluateValue(Notes) || !var->isInitICE()) {