mdcache: Fix asan reported potential heap buffer overflow

The char pointer mdc_xattr_str in function mdc_xattr_list_populate
is malloc'd and doing a strcat into a malloc'd region can
overflow content allocated based on prior contents of the
memory region.

Added a NULL terimation to the malloc'd region to prevent
the overflow, and treat it as an empty string.

Change-Id: If0decab669551581230a8ede4c44c319ff04bac9
Updates: bz#1635373
Signed-off-by: ShyamsundarR <srangana@redhat.com>
(cherry picked from commit d00a2a1b398346bbdc5ac9b3ba4b09fb1ce1e699)

0 files changed, 0 insertions, 0 deletions