cgxget: Fix clang warning

Fix the following clang warning by explicitily initializing disk_cg to
NULL.

	tools/cgxget.c:903:6: warning: variable 'disk_cg' is used uninitialized
	whenever 'if' condition is true [-Wsometimes-uninitialized]
	  903 |         if (!cg || !(*cg)) {
	      |             ^~~~~~~~~~~~~
	tools/cgxget.c:940:6: note: uninitialized use occurs here
	  940 |         if (disk_cg)
	      |             ^~~~~~~
	tools/cgxget.c:903:2: note: remove the 'if' if its condition is always
	false
	  903 |         if (!cg || !(*cg)) {
	      |         ^~~~~~~~~~~~~~~~~~~~
	  904 |                 ret = ECGINVAL;
	      |                 ~~~~~~~~~~~~~~~
	  905 |                 goto out;
	      |                 ~~~~~~~~~
	  906 |         }
	      |         ~

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>

diff --git a/src/tools/cgxget.c b/src/tools/cgxget.c
index ef69a8a2223e0a50eb8e29d9203a79e67d1fff3c..4192de59a6f77d5bbafa053eea87210d76836810 100644 (file)
--- a/src/tools/cgxget.c
+++ b/src/tools/cgxget.c
@@ -897,7 +897,7 @@ err:
 #ifdef LIBCG_LIB
 int cgroup_cgxget(struct cgroup **cg, enum cg_version_t version, bool ignore_unmappable)
 {
-       struct cgroup *disk_cg, *out_cg;
+       struct cgroup *disk_cg = NULL, *out_cg;
        int ret;
 
        if (!cg || !(*cg)) {