create appendCopy method in OUStringBuffer

so we can avoid temporary copies when appending a substring of an
OUString to the buffer. I would have preferred to call the method just
"append" but that results in ambiguous method errors when the callsite
is something like
sal_Int32 n;
OUStringBuffer s;
s.append(n, 10);
I'm not sure why

Change-Id: I6b5b6641fcb5b26ce2269f89ef06e03c0b6aa76f
Reviewed-on: https://gerrit.libreoffice.org/58666
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/registry/source/keyimpl.cxx b/registry/source/keyimpl.cxx
index 1a511a5e2a44..82077d4f287c 100644
--- a/registry/source/keyimpl.cxx
+++ b/registry/source/keyimpl.cxx
@@ -1036,7 +1036,7 @@ OUString ORegKey::getFullPath(OUString const & path) const {
     OUStringBuffer b(m_name);
     if (!b.isEmpty() && b[b.getLength() - 1] == '/') {
         if (path[0] == '/') {
-            b.append(path.copy(1));
+            b.appendCopy(path,1);
         } else {
             b.append(path);
         }