[libvirt] [PATCH 9/9] virstoragefile: Resolve Coverity DEADCODE

[John Ferlan]

Coverity complains that the condition "size + 1 == 0" cannot happen.
Since 'size' is unsigned 32bit value set using virReadBufInt32BE.
Thus rather than + 1, it seems the comparison should be is it at
max now and if so, return the failure.

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/util/virstoragefile.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 299edcd..0219ce8 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -393,7 +393,7 @@ qcowXGetBackingStore(char **res,
     }
     if (offset + size > buf_size || offset + size < offset)
         return BACKING_STORE_INVALID;
-    if (size + 1 == 0)
+    if (size == UINT_MAX)
         return BACKING_STORE_INVALID;
     if (VIR_ALLOC_N(*res, size + 1) < 0)
         return BACKING_STORE_ERROR;
-- 
1.9.3