Avoid incomplete type in fn sig to keep ubsan's RTTI-based checks happy

Change-Id: I2d4e4be562cc752e7545792b148d5ed0cf551f25

sax/source/expatwrap/sax_expat.cxx

@@ -26,6 +26,7 @@
 
 #include <com/sun/star/lang/XServiceInfo.hpp>
 #include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
 #include <com/sun/star/xml/sax/XExtendedDocumentHandler.hpp>
 #include <com/sun/star/xml/sax/XParser.hpp>
 #include <com/sun/star/xml/sax/SAXParseException.hpp>
@@ -48,10 +49,6 @@ using namespace ::com::sun::star::io;
 #include "attrlistimpl.hxx"
 #include "xml2utf.hxx"
 
-namespace com { namespace sun { namespace star { namespace uno {
-    class XComponentContext;
-} } } }
-
 namespace {
 
 // Useful macros for correct String conversion depending on the chosen expat-mode

sax/source/expatwrap/saxwriter.cxx

@@ -24,6 +24,7 @@
 #include <stack>
 
 #include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
 #include <com/sun/star/util/XCloneable.hpp>
 #include <com/sun/star/xml/sax/XParser.hpp>
 #include <com/sun/star/xml/sax/SAXParseException.hpp>
@@ -51,10 +52,6 @@ using namespace ::com::sun::star::io;
 #include "xml2utf.hxx"
 #include <boost/scoped_array.hpp>
 
-namespace com { namespace sun { namespace star { namespace uno {
-    class XComponentContext;
-} } } }
-
 #define LINEFEED 10
 #define SEQUENCESIZE 1024
 #define MAXCOLUMNCOUNT 72

sax/source/fastparser/fastparser.cxx

@@ -22,6 +22,7 @@
 #include "xml2utf.hxx"
 
 #include <com/sun/star/lang/DisposedException.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
 #include <com/sun/star/xml/sax/FastToken.hpp>
 #include <com/sun/star/xml/sax/SAXParseException.hpp>
 #include <com/sun/star/xml/sax/XFastContextHandler.hpp>
@@ -45,10 +46,6 @@
 #include <cstring>
 #include <expat.h>
 
-namespace com { namespace sun { namespace star { namespace uno {
-    class XComponentContext;
-} } } }
-
 using namespace ::std;
 using namespace ::osl;
 using namespace ::cppu;