buffer.cc: catch exception by reference

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>

diff --git a/src/common/buffer.cc b/src/common/buffer.cc
index 35c5d3605c481d03aa6e5010212f5b4451c4592d..e1709bcaa4be8a971be550d64cbeecab3c57a10e 100644 (file)
--- a/src/common/buffer.cc
+++ b/src/common/buffer.cc
@@ -1539,7 +1539,7 @@ int buffer::list::read_fd_zero_copy(int fd, size_t len)
   try {
     bufferptr bp = buffer::create_zero_copy(len, fd, NULL);
     append(bp);
-  } catch (buffer::error_code e) {
+  } catch (buffer::error_code &e) {
     return e.code;
   } catch (buffer::malformed_input) {
     return -EIO;