fix typo

Author: farzonl

clang/lib/Sema/HLSLExternalSemaSource.cpp

@@ -160,7 +160,7 @@ void HLSLExternalSemaSource::defineHLSLMatrixAlias() {
   TemplateParams.emplace_back(ColsParam);
 
   const unsigned MaxMatDim = SemaPtr->getLangOpts().MaxMatrixDimension;
-  ;
+  
   auto *MaxRow = IntegerLiteral::Create(
       AST, llvm::APInt(AST.getIntWidth(AST.IntTy), MaxMatDim), AST.IntTy,
       SourceLocation());