RadosStriperImpl.cc: fix double free
Some variables have been already free'd by calling
release(), no need to call delete() again on them.
CID
1396200 (#1 of 1): Double free (USE_AFTER_FREE)
double_free: Calling operator delete frees pointer
getxattr_completion which has already been freed.
CID
1396206 (#1 of 1): Double free (USE_AFTER_FREE)
double_free: Calling operator delete frees pointer
getxattr_completion which has already been freed.
CID
1396214 (#1 of 1): Double free (USE_AFTER_FREE)
double_free: Calling operator delete frees pointer
stat_completion which has already been freed.
CID
1396218 (#1 of 1): Double free (USE_AFTER_FREE)
double_free: Calling operator delete frees pointer
stat_completion which has already been freed.
Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>