[MERGE] don't assign a reused node.text value.

lp bug: https://launchpad.net/bugs/640677 fixed

bzr revid: vmt@openerp.com-20110525080921-fyrkdkdm3niupn1f

openerp/report/render/rml2pdf/trml2pdf.py

@@ -795,10 +795,10 @@ class _rml_flowable(object):
                         return False
                 else:
                     import base64
+                    newtext = node.text
                     if self.localcontext:
                         newtext = utils._process_text(self, node.text or '')
-                        node.text = newtext
-                    image_data = base64.decodestring(node.text)
+                    image_data = base64.decodestring(newtext)
                 if not image_data:
                     self._logger.debug("No inline image data")
                     return False