CMIS: fixed <wsse:Expires> output: c_str() on a temp string object isn't good

Change-Id: I7de9dd2372cd7b61a3bc03bdca0023a3bc7484bd

libcmis/UnpackedTarball_cmis.mk

@@ -16,6 +16,7 @@ $(eval $(call gb_UnpackedTarball_set_patchlevel,cmis,0))
 $(eval $(call gb_UnpackedTarball_add_patches,cmis, \
 	libcmis/libcmis-0.3.0-warnings.patch \
 	libcmis/libcmis-0.3.0-win.patch \
+	libcmis/libcmis-0.3.0.patch \
 ))
 
 ifeq ($(OS)$(COM),WNTMSC)

libcmis/libcmis-0.3.0.patch

+diff --git src/libcmis/ws-soap.cxx src/libcmis/ws-soap.cxx
+index e8efd67..decb79a 100644
+--- src/libcmis/ws-soap.cxx
++++ src/libcmis/ws-soap.cxx
+@@ -279,7 +279,7 @@ string SoapRequest::createEnvelope( string& username, string& password )
+     boost::posix_time::ptime expires( created );
+     expires = expires + boost::gregorian::days( 1 );
+     string createdStr = libcmis::writeDateTime( created );
+-    xmlChar* expiresStr = BAD_CAST( libcmis::writeDateTime( expires ).c_str( ) );
++    string expiresStr = libcmis::writeDateTime( expires );
+ 
+     xmlTextWriterStartElement( writer, BAD_CAST( "S:Envelope" ) );
+     xmlTextWriterWriteAttribute( writer, BAD_CAST( "xmlns:S" ), BAD_CAST( NS_SOAP_ENV_URL ) );
+@@ -296,7 +296,7 @@ string SoapRequest::createEnvelope( string& username, string& password )
+     xmlTextWriterWriteRaw( writer, BAD_CAST( createdStr.c_str( ) ) );
+     xmlTextWriterEndElement( writer ); // End of Created
+     xmlTextWriterStartElement( writer, BAD_CAST( "wsse:Expires" ) );
+-    xmlTextWriterWriteRaw( writer, expiresStr );
++    xmlTextWriterWriteRaw( writer, BAD_CAST( expiresStr.c_str() ) );
+     xmlTextWriterEndElement( writer ); // End of Expires
+     xmlTextWriterEndElement( writer ); // End of Timestamp
+