Fix warning: unused variable

src/xlsx/xlsxdocument.cpp

@@ -351,8 +351,6 @@ bool Document::saveAs(const QString &name)
  */
 bool Document::saveAs(QIODevice *device)
 {
-    Q_D(Document);
-
 //    activedWorksheet()->setHidden(false);
 //    activedWorksheet()->setSelected(true);
 

src/xlsx/xlsxpackage.cpp

@@ -268,6 +268,7 @@ void Package::writeContentTypesFile(ZipWriter &zipWriter)
 
     int drawing_index = 1;
     foreach (Drawing *drawing, m_workbook->drawings()) {
+        Q_UNUSED(drawing);
         content.addDrawingName(QStringLiteral("drawing%1").arg(drawing_index));
         drawing_index += 1;
     }

src/xlsx/xlsxstyles.cpp

@@ -527,6 +527,7 @@ void Styles::writeDxfs(XmlStreamWriter &writer)
     writer.writeAttribute(QStringLiteral("count"), QString::number(m_dxf_formatsList.size()));
     foreach (Format *format, m_dxf_formatsList) {
         writer.writeStartElement(QStringLiteral("dxf"));
+        Q_UNUSED(format)
         writer.writeEndElement();//dxf
     }
     writer.writeEndElement(); //dxfs

src/xlsx/xlsxworkbook.cpp

@@ -126,7 +126,8 @@ void Workbook::setDefaultDateFormat(const QString &format)
 
 void Workbook::defineName(const QString &name, const QString &formula)
 {
-
+    Q_UNUSED(name);
+    Q_UNUSED(formula);
 }
 
 Worksheet *Workbook::addWorksheet(const QString &name)

src/xlsx/xlsxworksheet.cpp

@@ -536,7 +536,6 @@ int Worksheet::insertImage(int row, int column, const QImage &image, const QPoin
 
 int Worksheet::mergeCells(const QString &range)
 {
-    Q_D(Worksheet);
     QStringList cells = range.split(QLatin1Char(':'));
     if (cells.size() != 2)
         return -1;
@@ -572,7 +571,6 @@ int Worksheet::mergeCells(int row_begin, int column_begin, int row_end, int colu
 
 int Worksheet::unmergeCells(const QString &range)
 {
-    Q_D(Worksheet);
     QStringList cells = range.split(QLatin1Char(':'));
     if (cells.size() != 2)
         return -1;
@@ -1309,6 +1307,9 @@ void WorksheetPrivate::readMergeCells(XmlStreamReader &reader)
             }
         }
     }
+
+    if (merges.size() != count)
+        qDebug("read merge cells error");
 }
 
 bool Worksheet::loadFromXmlFile(QIODevice *device)