util: Set errno to 0 before strtol/stroul call

In order to be able to distinguish between success/failure case when
calling strtol/stroul we set errno explicitly to 0.

Signed-off-by: Daniel Wagner <dwagner@suse.de>

diff --git a/util/argconfig.c b/util/argconfig.c
index 78f3a6c37ed2b3924a860cf4a294d078e01ef7ec..91f499813d3a039d2e68b274046e6504b8781e67 100644 (file)
--- a/util/argconfig.c
+++ b/util/argconfig.c
@@ -164,6 +164,8 @@ static int argconfig_parse_type(struct argconfig_commandline_options *s, struct
        char *endptr;
        int ret = 0;
 
+       errno = 0;    /* To distinguish success/failure after strtol/stroul call */
+
        switch (s->config_type) {
        case CFG_STRING:
                *((char **)value) = optarg;