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/desktop/source/deployment/misc/dp_misc.cxx b/desktop/source/deployment/misc/dp_misc.cxx
index 9ab6d8f09743..b231dac760ec 100644
--- a/desktop/source/deployment/misc/dp_misc.cxx
+++ b/desktop/source/deployment/misc/dp_misc.cxx
@@ -266,7 +266,7 @@ OUString makeURL( OUString const & baseURL, OUString const & relPath_ )
 {
     OUStringBuffer buf;
     if (baseURL.getLength() > 1 && baseURL[ baseURL.getLength() - 1 ] == '/')
-        buf.append( baseURL.copy( 0, baseURL.getLength() - 1 ) );
+        buf.appendCopy( baseURL, 0, baseURL.getLength() - 1 );
     else
         buf.append( baseURL );
     OUString relPath(relPath_);