conditional SAL_WARN

An attempt to import a language from fo:language is fine even if
*:rfc-language-tag was already imported, just ignore this case instead
of warning, warn only if Language!="qlt".

Change-Id: I0f7ebc6964fe079c9f86ca19e98cfa56ec56398a

xmloff/source/style/chrlohdl.cxx

@@ -86,7 +86,10 @@ sal_Bool XMLCharLanguageHdl::importXML( const OUString& rStrImpValue, uno::Any&
         else
         {
             if (!aLocale.Language.isEmpty() || aLocale.Variant[0] != '-')
-                SAL_WARN( "xmloff.style", "XMLCharLanguageHdl::importXML - attempt to import language twice");
+            {
+                SAL_WARN_IF( aLocale.Language != I18NLANGTAG_QLT, "xmloff.style",
+                        "XMLCharLanguageHdl::importXML - attempt to import language twice");
+            }
             else
             {
                 aLocale.Variant = rStrImpValue + aLocale.Variant;