Qt: Fix gap in advanced graphics settings on Linux

src/duckstation-qt/graphicssettingswidget.ui

@@ -94,7 +94,7 @@
            </widget>
           </item>
           <item row="0" column="1">
-           <widget class="QComboBox" name="resolutionScale" />
+           <widget class="QComboBox" name="resolutionScale"/>
           </item>
           <item row="1" column="0">
            <widget class="QLabel" name="gpuDownsampleLabel">
@@ -341,6 +341,13 @@
           </item>
           <item row="2" column="0" colspan="2">
            <layout class="QGridLayout" name="advancedDisplayOptionsLayout">
+            <item row="0" column="0">
+             <widget class="QCheckBox" name="disableMailboxPresentation">
+              <property name="text">
+               <string>Disable Mailbox Presentation</string>
+              </property>
+             </widget>
+            </item>
             <item row="0" column="1">
              <widget class="QCheckBox" name="threadedPresentation">
               <property name="text">
@@ -348,27 +355,20 @@
               </property>
              </widget>
             </item>
-            <item row="0" column="0">
+            <item row="1" column="1">
              <widget class="QCheckBox" name="blitSwapChain">
               <property name="text">
                <string>Use Blit Swap Chain</string>
               </property>
              </widget>
             </item>
-            <item row="1" column="1">
+            <item row="1" column="0">
              <widget class="QCheckBox" name="stretchDisplayVertically">
               <property name="text">
                <string>Stretch Vertically</string>
               </property>
              </widget>
             </item>
-            <item row="1" column="0">
-             <widget class="QCheckBox" name="disableMailboxPresentation">
-              <property name="text">
-               <string>Disable Mailbox Presentation</string>
-              </property>
-             </widget>
-            </item>
            </layout>
           </item>
          </layout>