Aligning the 'Maximal stack depth' spinbox to its label.

src/plugins/debugger/commonoptionspage.ui

@@ -62,9 +62,6 @@
         </property>
        </widget>
       </item>
-      <item>
-       <layout class="QHBoxLayout" name="horizontalLayout"/>
-      </item>
       <item>
        <layout class="QHBoxLayout" name="horizontalLayout_2">
         <item>
@@ -96,6 +93,19 @@
           </property>
          </widget>
         </item>
+        <item>
+         <spacer name="horizontalSpacer">
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
+          </property>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>40</width>
+            <height>20</height>
+           </size>
+          </property>
+         </spacer>
+        </item>
        </layout>
       </item>
      </layout>