Fixed in https://github.com/BigBadaboom/androidsvg/issues/170



````java
Fatal Exception: java.lang.IllegalArgumentException: bad base-64
       at android.util.Base64.decode(Base64.java:161)
       at android.util.Base64.decode(Base64.java:136)
       at android.util.Base64.decode(Base64.java:118)
       at com.caverock.androidsvg.SVGAndroidRenderer.checkForImageDataURL(SVGAndroidRenderer.java:1939)
       at com.caverock.androidsvg.SVGAndroidRenderer.render(SVGAndroidRenderer.java:1860)
       at com.caverock.androidsvg.SVGAndroidRenderer.render(SVGAndroidRenderer.java:300)
       at com.caverock.androidsvg.SVGAndroidRenderer.renderChildren(SVGAndroidRenderer.java:334)
       at com.caverock.androidsvg.SVGAndroidRenderer.render(SVGAndroidRenderer.java:623)
       at com.caverock.androidsvg.SVGAndroidRenderer.render(SVGAndroidRenderer.java:298)
       at com.caverock.androidsvg.SVGAndroidRenderer.renderChildren(SVGAndroidRenderer.java:334)
       at com.caverock.androidsvg.SVGAndroidRenderer.render(SVGAndroidRenderer.java:580)
       at com.caverock.androidsvg.SVGAndroidRenderer.renderDocument(SVGAndroidRenderer.java:268)
       at com.caverock.androidsvg.SVG.renderToCanvas(SVG.java:466)
       at com.caverock.androidsvg.SVG.renderToCanvas(SVG.java:443)
       at org.openhab.habdroid.util.AsyncHttpClient$BitmapResponseHandler.getBitmapFromSvgInputstream(AsyncHttpClient.java:126)
       at org.openhab.habdroid.util.AsyncHttpClient$BitmapResponseHandler.convertBodyInBackground(AsyncHttpClient.java:67)
````

Signed-off-by: mueller-ma <mueller-ma@users.noreply.github.com>