ModBus: Don't use QByteArray::operator[] on a temporaryv5.10.0-beta2

Found by clazy.

Change-Id: Ie1ff78bf4a2371a0650a9029bae256855916b17c
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
Reviewed-by: Karsten Heimrich <karsten.heimrich@qt.io>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/serialbus/qmodbuspdu.cpp b/src/serialbus/qmodbuspdu.cpp
index e1ce0c6..6b1cee4 100644
--- a/src/serialbus/qmodbuspdu.cpp
+++ b/src/serialbus/qmodbuspdu.cpp
@@ -555,18 +555,18 @@ int QModbusRequest::calculateDataSize(const QModbusRequest &request)
     case QModbusPdu::WriteMultipleCoils:
         minimum -= 1; // first payload payload byte
         if (request.dataSize() >= minimum)
-            size = minimum + quint8(request.data()[minimum - 1]) /*byte count*/;
+            size = minimum + quint8(request.data().at(minimum - 1)) /*byte count*/;
         break;
     case QModbusPdu::WriteMultipleRegisters:
     case QModbusPdu::ReadWriteMultipleRegisters:
         minimum -= 2; // first 2 payload payload bytes
         if (request.dataSize() >= minimum)
-            size = minimum + quint8(request.data()[minimum - 1]) /*byte count*/;
+            size = minimum + quint8(request.data().at(minimum - 1)) /*byte count*/;
         break;
     case QModbusPdu::ReadFileRecord:
     case QModbusPdu::WriteFileRecord:
         if (request.dataSize() >= 1)
-            size = 1 /*byte count*/ + quint8(request.data()[0]) /*actual bytes*/;
+            size = 1 /*byte count*/ + quint8(request.data().at(0)) /*actual bytes*/;
         break;
     case QModbusPdu::EncapsulatedInterfaceTransport: {
         if (request.dataSize() < minimum)