Fix layout. Remove double margin

src/filter/dialog/filteractionmissingidentitydialog.cpp

@@ -42,8 +42,16 @@ FilterActionMissingIdentityDialog::FilterActionMissingIdentityDialog(const QStri
     setWindowTitle(i18n("Select Identity"));
     QVBoxLayout *mainLayout = new QVBoxLayout(this);
 
-    QWidget *mainWidget = new QWidget(this);
-    mainLayout->addWidget(mainWidget);
+    QLabel *label = new QLabel(this);
+    label->setObjectName(QStringLiteral("label"));
+    label->setText(i18n("Filter identity is missing. "
+                        "Please select an identity to use with filter \"%1\"",
+                        filtername));
+    label->setWordWrap(true);
+    mainLayout->addWidget(label);
+    mComboBoxIdentity = new KIdentityManagement::IdentityCombo(KernelIf->identityManager(), this);
+    mComboBoxIdentity->setObjectName(QStringLiteral("comboboxidentity"));
+    mainLayout->addWidget(mComboBoxIdentity);
 
     QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this);
     buttonBox->setObjectName(QStringLiteral("buttonbox"));
@@ -55,17 +63,7 @@ FilterActionMissingIdentityDialog::FilterActionMissingIdentityDialog(const QStri
     connect(buttonBox, &QDialogButtonBox::rejected, this, &FilterActionMissingIdentityDialog::reject);
     mainLayout->addWidget(buttonBox);
     okButton->setDefault(true);
-    QVBoxLayout *lay = new QVBoxLayout(mainWidget);
-    QLabel *label = new QLabel(this);
-    label->setObjectName(QStringLiteral("label"));
-    label->setText(i18n("Filter identity is missing. "
-                        "Please select an identity to use with filter \"%1\"",
-                        filtername));
-    label->setWordWrap(true);
-    lay->addWidget(label);
-    mComboBoxIdentity = new KIdentityManagement::IdentityCombo(KernelIf->identityManager(), this);
-    mComboBoxIdentity->setObjectName(QStringLiteral("comboboxidentity"));
-    lay->addWidget(mComboBoxIdentity);
+
     readConfig();
 }