[CRIU] [PATCH 17/38] compel: Test for pack action results

[Cyrill Gorcunov]

Fix warnings like

|   HOSTCC   compel/src/lib/pack-host.o
| compel/src/lib/pack-host.c: In function 'libcompel_pack_objs':
| compel/src/lib/pack-host.c:67:3: error: ignoring return value of 'fgets', declared with attribute warn_unused_result [-Werror=unused-result]
|   fgets(data, sizeof(data), f);
|   ^

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 compel/src/lib/pack.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/compel/src/lib/pack.c b/compel/src/lib/pack.c
index b75d6caf5ddc..d57d7ecd6a14 100644
--- a/compel/src/lib/pack.c
+++ b/compel/src/lib/pack.c
@@ -64,9 +64,11 @@ int libcompel_pack_objs(char **objs, size_t nobjs,
 
 	f = popen(command, "r");
 	if (f) {
-		fgets(data, sizeof(data), f);
-		ret = data[0] == '\0' ? 0 : 1;
-		pclose(f);
+		if (fgets(data, sizeof(data), f))
+			ret = data[0] == '\0' ? 0 : -1;
+		else
+			ret = -1;
+		ret = (pclose(f) >= 0 ? 0 : -1);
 //		if (!ret)
 //			ret = libcompel_verify_packed(out ? : COMPEL_DEFAULT_PACK_OUT);
 	} else
-- 
2.7.4