coverity#706266 Uncaught exception

Change-Id: Iba3d2b8cddcd9e0f228d5b9fef1ce3290047c8b0

chart2/source/model/main/Legend.cxx

@@ -279,7 +279,7 @@ Sequence< OUString > Legend::getSupportedServiceNames_Static()
 
 // ____ OPropertySet ____
 Any Legend::GetDefaultValue( sal_Int32 nHandle ) const
-    throw(beans::UnknownPropertyException)
+    throw (beans::UnknownPropertyException, uno::RuntimeException)
 {
     const tPropertyValueMap& rStaticDefaults = *StaticLegendDefaults::get();
     tPropertyValueMap::const_iterator aFound( rStaticDefaults.find( nHandle ) );

chart2/source/model/main/Legend.hxx

@@ -72,7 +72,7 @@ protected:
 
     // ____ OPropertySet ____
     virtual ::com::sun::star::uno::Any GetDefaultValue( sal_Int32 nHandle ) const
-        throw(::com::sun::star::beans::UnknownPropertyException) SAL_OVERRIDE;
+        throw (css::beans::UnknownPropertyException, css::uno::RuntimeException) SAL_OVERRIDE;
 
     // ____ OPropertySet ____
     virtual ::cppu::IPropertyArrayHelper & SAL_CALL getInfoHelper() SAL_OVERRIDE;