echo_rest sample seg fault with libcurl

Sending OM : <ns1:echoString xmlns:ns1="http://ws.apache.org/axis2/services/echo"><text>Hello World!</text></ns1:echoString>

• • • glibc detected *** ./echo_rest: munmap_chunk(): invalid pointer: 0x00007f07516d2847 ***
      ======= Backtrace: =========
      /lib/x86_64-linux-gnu/libc.so.6(+0x7eb96)[0x7f07525d4b96]
      /home/dinesh/trunk/deploy/lib/libaxis2_http_sender.so(axis2_libcurl_send+0x64f)[0x7f07516cc22f]
      /home/dinesh/trunk/deploy/lib/libaxis2_http_sender.so(axis2_http_transport_sender_write_message+0x183)[0x7f07516c82b3]
      /home/dinesh/trunk/deploy/lib/libaxis2_http_sender.so(axis2_http_transport_sender_invoke+0x27d)[0x7f07516c86dd]
      /home/dinesh/trunk/deploy/lib/libaxis2_engine.so.0(axis2_engine_send+0x18f)[0x7f075293e69f]
      /home/dinesh/trunk/deploy/lib/libaxis2_engine.so.0(axis2_op_client_two_way_send+0x96)[0x7f0752962c76]
      /home/dinesh/trunk/deploy/lib/libaxis2_engine.so.0(axis2_op_client_execute+0x323)[0x7f0752963643]
      /home/dinesh/trunk/deploy/lib/libaxis2_engine.so.0(axis2_svc_client_send_receive_with_op_qname+0x162)[0x7f0752964872]
      ./echo_rest[0x401008]
      /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7f075257776d]
      ./echo_rest[0x4013f9]
      ======= Memory map: ========
      00400000-00402000 r-xp 00000000 08:01 269607 /home/dinesh/trunk/deploy/samples/bin/echo_rest
      00601000-00602000 r--p 00001000 08:01 269607 /home/dinesh/trunk/deploy/samples/bin/echo_rest
      00602000-00603000 rw-p 00002000 08:01 269607 /home/dinesh/trunk/deploy/samples/bin/echo_rest
      01a42000-01b4f000 rw-p 00000000 00:00 0 [heap]
      7f074c777000-7f074c78c000 r-xp 00000000 08:01 2471 /lib/x86_64-linux-gnu/libgcc_s.so.1
      7f074c78c000-7f074c98b000 ---p 00015000 08:01 2471 /lib/x86_64-linux-gnu/libgcc_s.so.1
      7f074c98b000-7f074c98c000 r--p 00014000 08:01 2471 /lib/x86_64-linux-gnu/libgcc_s.so.1
      7f074c98c000-7f074c98d000 rw-p 00015000 08:01 2471 /lib/x86_64-linux-gnu/libgcc_s.so.1