WaE: implicit conversion of literal of type 'int' to 'bool'

Change-Id: I1c3721a4d44c882c749903c15f05666a74c725a5

vcl/source/gdi/print.cxx

@@ -1843,13 +1843,13 @@ void Printer::SetFontOrientation( ImplFontEntry* const pFontEntry ) const
 void Printer::DrawImage( const Point&, const Image&, sal_uInt16 )
 {
     SAL_WARN ("vcl.gdi", "DrawImage(): Images can't be drawn on any Printer instance");
-    assert(0);
+    assert(false);
 }
 
 void Printer::DrawImage( const Point&, const Size&, const Image&, sal_uInt16 )
 {
     SAL_WARN ("vcl.gdi", "DrawImage(): Images can't be drawn on any Printer instance");
-    assert(0);
+    assert(false);
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */