skins2: correct wrong height when animated images are used

The height of a control associated to an animated image is not the height
of the image but the height divided by the number of subimages.

modules/gui/skins2/parser/builder.cpp

@@ -458,8 +458,8 @@ void Builder::addButton( const BuilderData::Button &rData )
     const Position pos = makePosition( rData.m_leftTop, rData.m_rightBottom,
                              rData.m_xPos, rData.m_yPos,
                              pBmpUp->getWidth(),
-                                       pBmpUp->getHeight(), *pRect,
-                                       rData.m_xKeepRatio, rData.m_yKeepRatio );
+                             pBmpUp->getHeight() / pBmpUp->getNbFrames(),
+                             *pRect, rData.m_xKeepRatio, rData.m_yKeepRatio );
 
     pLayout->addControl( pButton, pos, rData.m_layer );
 }
@@ -535,8 +535,8 @@ void Builder::addCheckbox( const BuilderData::Checkbox &rData )
     const Position pos = makePosition( rData.m_leftTop, rData.m_rightBottom,
                             rData.m_xPos, rData.m_yPos,
                             pBmpUp1->getWidth(),
-                                       pBmpUp1->getHeight(), *pRect,
-                                       rData.m_xKeepRatio, rData.m_yKeepRatio );
+                            pBmpUp1->getHeight() / pBmpUp1->getNbFrames(),
+                            *pRect, rData.m_xKeepRatio, rData.m_yKeepRatio );
 
     pLayout->addControl( pCheckbox, pos, rData.m_layer );
 }