storagefile: qcow1: Check for BACKING_STORE_OK

Check explicitly for BACKING_STORE_OK and not its 0 value

Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>

diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 51726006e7fd07e6177f1f987fef77cb2bfcc0f3..1549067c48c243a1ef723b18531b00e46dd6ca68 100644 (file)
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -578,7 +578,7 @@ qcow1GetBackingStore(char **res,
      * used to store backing format */
     *format = VIR_STORAGE_FILE_AUTO;
     ret = qcowXGetBackingStore(res, NULL, buf, buf_size, false);
-    if (ret == 0 && *buf == '\0')
+    if (ret == BACKING_STORE_OK && *buf == '\0')
         *format = VIR_STORAGE_FILE_NONE;
     return ret;
 }