[ui] Fix data source selection dialog icon size

Author: nirvn

src/gui/qgsdatasourceselectdialog.cpp

@@ -16,10 +16,12 @@
 
 #include "qgsdatasourceselectdialog.h"
 #include "ui_qgsdatasourceselectdialog.h"
-#include "qgssettings.h"
-#include "qgsgui.h"
+
 #include "qgis.h"
 #include "qgsbrowsermodel.h"
+#include "qgsgui.h"
+#include "qgsguiutils.h"
+#include "qgssettings.h"
 
 #include <QPushButton>
 #include <QMenu>
@@ -105,6 +107,8 @@ QgsDataSourceSelectDialog::QgsDataSourceSelectDialog(
   connect( mLeFilter, &QgsFilterLineEdit::textChanged, this, &QgsDataSourceSelectDialog::setFilter );
   connect( group, &QActionGroup::triggered, this, &QgsDataSourceSelectDialog::setFilterSyntax );
 
+  mBrowserToolbar->setIconSize( QgsGuiUtils::iconSize( true ) );
+
   if ( QgsSettings().value( QStringLiteral( "datasourceSelectFilterVisible" ), false, QgsSettings::Section::Gui ).toBool() )
   {
     mActionShowFilter->trigger();

src/ui/qgsdatasourceselectdialog.ui

@@ -14,11 +14,26 @@
    <string>Dialog</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
+   <property name="spacing">
+    <number>4</number>
+   </property>
+   <property name="leftMargin">
+    <number>4</number>
+   </property>
+   <property name="topMargin">
+    <number>4</number>
+   </property>
+   <property name="rightMargin">
+    <number>4</number>
+   </property>
+   <property name="bottomMargin">
+    <number>4</number>
+   </property>
    <item>
     <widget class="QWidget" name="mContents">
      <layout class="QVBoxLayout" name="verticalLayout_2">
       <property name="spacing">
-       <number>6</number>
+       <number>3</number>
       </property>
       <property name="leftMargin">
        <number>0</number>