Fix the code

Author: Thirumalai-Shaktivel

flang/lib/Optimizer/Dialect/FIROps.cpp

@@ -4271,7 +4271,6 @@ void fir::StoreOp::getEffects(
 mlir::ParseResult fir::PrefetchOp::parse(mlir::OpAsmParser &parser,
                                          mlir::OperationState &result) {
   mlir::OpAsmParser::UnresolvedOperand memref;
-  // mlir::Type type = parser.getBuilder().getIntegerType(64);
   if (parser.parseOperand(memref))
     return mlir::failure();
 
@@ -4301,7 +4300,7 @@ mlir::ParseResult fir::PrefetchOp::parse(mlir::OpAsmParser &parser,
       result.addAttribute("cacheType", parser.getBuilder().getUnitAttr());
     } else
       return parser.emitError(parser.getCurrentLocation(),
-                              "Expected either read or write keyword");
+                              "Expected either intruction or data keyword");
 
     if (parser.parseComma())
       return mlir::failure();