Tweak spacing/margins a bit

Author: baldurk

qrenderdoc/Windows/PerformanceCounterViewer.ui

@@ -18,30 +18,30 @@
     <number>0</number>
    </property>
    <property name="leftMargin">
-    <number>0</number>
+    <number>3</number>
    </property>
    <property name="topMargin">
-    <number>0</number>
+    <number>3</number>
    </property>
    <property name="rightMargin">
-    <number>0</number>
+    <number>3</number>
    </property>
    <property name="bottomMargin">
-    <number>0</number>
+    <number>3</number>
    </property>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
      <property name="spacing">
-      <number>3</number>
+      <number>0</number>
      </property>
      <property name="sizeConstraint">
       <enum>QLayout::SetDefaultConstraint</enum>
      </property>
      <property name="leftMargin">
-      <number>6</number>
+      <number>0</number>
      </property>
      <property name="rightMargin">
-      <number>6</number>
+      <number>0</number>
      </property>
      <item>
       <widget class="QFrame" name="frame">