NPE thrown by TikaConfig.getDefaultConfig()

The below exception gets thrown every time I execute TikaConfig.getDefaultConfig. Similary, invoking `Tika t = new Tika()` throws the same exception, since code inside this constructor invokes TikaConfig.getDefaultConfig().

This problem is non-existent when I use Tika-core and Tika-parsers 1.0. But when bump the version numbers to 1.2 (in order to get around a bug in PDFBOX), the problem shows up. I'm using maven. I've carefully ensured that I'm not pulling in the wrong version of Tika, using things like `mvn dependency:tree` and making there were no sneaky problematic transitive dependencies.

java.lang.NullPointerException
at org.apache.tika.mime.MimeTypesReader$ClauseRecord.stop(MimeTypesReader.java:245)
at org.apache.tika.mime.MimeTypesReader.endElement(MimeTypesReader.java:203)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:606)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:183)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1303)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:302)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:195)
at org.apache.tika.mime.MimeTypesReader.read(MimeTypesReader.java:115)
at org.apache.tika.mime.MimeTypesFactory.create(MimeTypesFactory.java:64)
at org.apache.tika.mime.MimeTypesFactory.create(MimeTypesFactory.java:93)
at org.apache.tika.mime.MimeTypesFactory.create(MimeTypesFactory.java:149)
at org.apache.tika.mime.MimeTypes.getDefaultMimeTypes(MimeTypes.java:479)
at org.apache.tika.config.TikaConfig.getDefaultMimeTypes(TikaConfig.java:60)
at org.apache.tika.config.TikaConfig.<init>(TikaConfig.java:169)
at org.apache.tika.config.TikaConfig.getDefaultConfig(TikaConfig.java:268)
at
my.method.which.invokes `new Tika()`