[PATCH python] Avoid implicit treatment of an arithmetic result as a boolean

["Daniel P. Berrange" <berrange@xxxxxxxxxx>]

Latest GCC versions are unhappy with us treating an integer
arithmetic result as a boolean:

libvirt-utils.c: In function ‘virReallocN’:
libvirt-utils.c:111:23: warning: ‘*’ in boolean context, suggest ‘&&’ instead [-Wint-in-bool-context]
     if (!tmp && (size * count)) {
                 ~~~~~~^~~~~~~~

Add an explicit comparison '!= 0' to keep it happy, since its
suggestion to use '&&' is nonsense.

Signed-off-by: Daniel P. Berrange <berrange@xxxxxxxxxx>
---
 libvirt-utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libvirt-utils.c b/libvirt-utils.c
index b8ac5e9..f7b4478 100644
--- a/libvirt-utils.c
+++ b/libvirt-utils.c
@@ -108,7 +108,7 @@ virReallocN(void *ptrptr,
         return -1;
     }
     tmp = realloc(*(void**)ptrptr, size * count);
-    if (!tmp && (size * count)) {
+    if (!tmp && ((size * count) != 0)) {
         return -1;
     }
     *(void**)ptrptr = tmp;
-- 
2.13.5

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