uic: Remove trailing blanks generated into Python icon code

The indentation is only required for C++.

Change-Id: Ie861b12ba262fd56995c11d883129bafd11eface
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
(cherry picked from commit d1175e20cf61fa37cff03c76d4714cc8fdbd7b8d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

src/tools/uic/cpp/cppwriteinitialization.cpp

@@ -1827,9 +1827,8 @@ QString WriteInitialization::writeIconProperties(const DomResourceIcon *i)
             writeResourceIcon(m_output, iconName, m_dindent, i);
         else
             writePixmapFunctionIcon(m_output, iconName, m_dindent, i);
-        m_output << m_indent;
         if (isCpp)
-            m_output << '}';
+            m_output << m_indent << '}';
         m_output  << '\n';
         return iconName;
     }