common/buffer: remove repeated condtion-check.

In func push_back(), it already check buffe::ptr::length().

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>

diff --git a/src/common/buffer.cc b/src/common/buffer.cc
index b1c533ed3100fb2b08891bd1e4e7bf98c523c887..734cc20bbd44daf0b4ca45b48375f3b238c8c892 100644 (file)
--- a/src/common/buffer.cc
+++ b/src/common/buffer.cc
@@ -1539,13 +1539,11 @@ using namespace ceph;
 
   void buffer::list::append(const ptr& bp)
   {
-    if (bp.length())
       push_back(bp);
   }
 
   void buffer::list::append(ptr&& bp)
   {
-    if (bp.length())
       push_back(std::move(bp));
   }