common/fiemap.cc: fix realloc memory leak

Fix error from cppcheck:

[src/common/fiemap.cc:73]: (error) Common realloc mistake: 'fiemap'
  nulled but not freed upon failure

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
os/FileStore.cc: fix realloc memory leak in error case

Fix error from cppcheck:

[src/os/FileStore.cc:512]: (error) Common realloc mistake: 'fiemap'
  nulled but not freed upon failure

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
rgw/rgw_xml.cc: fix realloc memory leak in error case

Fix error from cppcheck:

[src/rgw/rgw_xml.cc:212]: (error) Common realloc mistake: 'buf'
  nulled but not freed upon failure

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
wireshark: fix some memory leaks

Fix some memory leaks in packet-ceph.c. Error from cppcheck was:

[wireshark/ceph/packet-ceph.c:215]: (error) Memory leak: plop
[wireshark/ceph/packet-ceph.c:237]: (error) Memory leak: plop
[wireshark/ceph/packet-ceph.c:543]: (error) Memory leak: fsid_dec

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
SyntheticClient.cc: fix some memory leaks in the error handling

Fix some memory leaks in case of error handling due to failed
client->open() calls.

Error from cppcheck was:
[src/client/SyntheticClient.cc:1980]: (error) Memory leak: buf
[src/client/SyntheticClient.cc:2040]: (error) Memory leak: buf
[src/client/SyntheticClient.cc:2090]: (error) Memory leak: buf
rgw/rgw_rest.cc: fix 4K memory leak

Fix 4K memory leak in case RGWClientIO::read() fails in
read_all_chunked_input().

Error from cppcheck was:
Checking src/rgw/rgw_rest.cc...
[src/rgw/rgw_rest.cc:688]: (error) Memory leak: data

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
Merge remote-tracking branch 'danny/wip-da-sca-memleaks'

Reviewed-by: Sage Weil <sage@inktank.com>