svg-export: text animation didn't work - fixed

That was due to 2 problems:
- The namespace for an animation attribute was wrong
- For debug build the bullet placeholder is not the first child

Change-Id: If10c362f6fcffd4a05164cc5ca3ff6cacf5c28c1
Reviewed-on: https://gerrit.libreoffice.org/20238Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>
(cherry picked from commit 1b26e2ef)
Reviewed-on: https://gerrit.libreoffice.org/20266

filter/source/svg/presentation_engine.js

@@ -5638,7 +5638,7 @@ AnimationBaseNode.prototype.parseElement = function()
     }
 
     // sub-item attribute for text animated element
-    var sSubItemAttr = aAnimElem.getAttributeNS( NSS['smil'], 'sub-item' );
+    var sSubItemAttr = aAnimElem.getAttributeNS( NSS['anim'], 'sub-item' );
     this.bIsTargetTextElement = ( sSubItemAttr && ( sSubItemAttr === 'text' ) );
 
     // additive attribute
@@ -9185,7 +9185,7 @@ function AnimatedTextElement( aElement, aEventMultiplexer )
         var aBulletCharGroupElem = getElementByClassName( aTextShapeGroup, 'BulletChars' );
         if( aBulletCharGroupElem )
         {
-            var aBulletPlaceholderElem = getElementByClassName( aElement.firstElementChild, 'BulletPlaceholder' );
+            var aBulletPlaceholderElem = getElementByClassName( aElement, 'BulletPlaceholder' );
             if( aBulletPlaceholderElem )
             {
                 var sId = aBulletPlaceholderElem.getAttribute( 'id' );