Since the empty file with a .base64 value wasn't recognized during the loading
process (starting of libvirtd), attempting to get a value for the UUID resulted
in an undefined error. This patch resolves the issue by checking the size of
the file and ensuring that the stored value is as expected (NULL).

Signed-off-by: Adam Julis <ajulis@redhat.com>
---
 src/conf/virsecretobj.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/conf/virsecretobj.c b/src/conf/virsecretobj.c
index 455798d414..66270e2751 100644
--- a/src/conf/virsecretobj.c
+++ b/src/conf/virsecretobj.c
@@ -836,6 +836,11 @@ virSecretLoadValue(virSecretObj *obj)
         goto cleanup;
     }
 
+    if (st.st_size < 1) {
+        ret = 0;
+        goto cleanup;
+    }
+
     contents = g_new0(char, st.st_size + 1);
 
     if (saferead(fd, contents, st.st_size) != st.st_size) {
-- 
2.47.1