textproc/libxml++26: unbreak build with libc++ 4.0

libxml++/io/istreamparserinputbuffer.cc:42:12: error: no viable conversion from returned value of
      type 'std::istream' (aka 'basic_istream<char>') to function return type 'bool'
    return input_;
           ^~~~~~
libxml++/io/ostreamoutputbuffer.cc:32:12: error: no viable conversion from returned value of type
      'std::ostream' (aka 'basic_ostream<char>') to function return type 'bool'
    return output_;
           ^~~~~~~
libxml++/io/ostreamoutputbuffer.cc:39:12: error: no viable conversion from returned value of type
      'std::ostream' (aka 'basic_ostream<char>') to function return type 'bool'
    return output_;
           ^~~~~~~

PR:		216034
Regressed by:	https://github.com/llvm-mirror/libcxx/commit/3a1b90a866b6
Submitted by:	dim
Approved by:	portmgr blanket

2 files changed, 28 insertions, 0 deletions

diff --git a/textproc/libxml++26/files/patch-libxml++_io_istreamparserinputbuffer.cc b/textproc/libxml++26/files/patch-libxml++_io_istreamparserinputbuffer.cc
new file mode 100644
index 000000000000..109e1e543470
--- /dev/null
+++ b/textproc/libxml++26/files/patch-libxml++_io_istreamparserinputbuffer.cc
@@ -0,0 +1,10 @@
+--- libxml++/io/istreamparserinputbuffer.cc.orig	2010-12-15 10:41:27 UTC
++++ libxml++/io/istreamparserinputbuffer.cc
+@@ -39,6 +39,6 @@ namespace xmlpp
+ 
+   bool IStreamParserInputBuffer::do_close()
+   {
+-    return input_;
++    return bool(input_);
+   }
+ }
diff --git a/textproc/libxml++26/files/patch-libxml++_io_ostreamoutputbuffer.cc b/textproc/libxml++26/files/patch-libxml++_io_ostreamoutputbuffer.cc
new file mode 100644
index 000000000000..666d10d74920
--- /dev/null
+++ b/textproc/libxml++26/files/patch-libxml++_io_ostreamoutputbuffer.cc
@@ -0,0 +1,18 @@
+--- libxml++/io/ostreamoutputbuffer.cc.orig	2010-12-15 10:41:27 UTC
++++ libxml++/io/ostreamoutputbuffer.cc
+@@ -29,13 +29,13 @@ namespace xmlpp
+     // here we rely on the ostream implicit conversion to boolean, to know if the stream can be used and/or if the write succeded.
+     if(output_)
+       output_.write(buffer, len);
+-    return output_;
++    return bool(output_);
+   }
+ 
+   bool OStreamOutputBuffer::do_close()
+   {
+     if(output_)
+         output_.flush();
+-    return output_;
++    return bool(output_);
+   }
+ }