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/vcl/source/control/longcurr.cxx b/vcl/source/control/longcurr.cxx
index f2a741abb6d6..3d46cf92d27c 100644
--- a/vcl/source/control/longcurr.cxx
+++ b/vcl/source/control/longcurr.cxx
@@ -117,7 +117,7 @@ bool ImplCurrencyGetValue( const OUString& rStr, BigInt& rValue,
     if ( nDecPos != -1 )
     {
         aStr1 = aStr.copy( 0, nDecPos );
-        aStr2.append(aStr.copy(nDecPos+1));
+        aStr2.appendCopy(aStr, nDecPos+1);
     }
     else
         aStr1 = aStr;