tree-wide: make parse_ifindex simply return the index

We don't need a seperate output parameter that is of type int.  glibc() says
that the type is "unsigned", but the kernel thinks it's "int".  And the
"alternative names" interface also uses ints. So let's standarize on ints,
since it's clearly not realisitic to have interface numbers in the upper half
of unsigned int range.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/basic/parse-util.h b/src/basic/parse-util.h
index 3a70b79276..b20f5b52cc 100644
--- a/src/basic/parse-util.h
+++ b/src/basic/parse-util.h
@@ -13,8 +13,8 @@ int parse_boolean(const char *v) _pure_;
 int parse_dev(const char *s, dev_t *ret);
 int parse_pid(const char *s, pid_t* ret_pid);
 int parse_mode(const char *s, mode_t *ret);
-int parse_ifindex(const char *s, int *ret);
-int parse_ifindex_or_ifname(const char *s, int *ret);
+int parse_ifindex(const char *s);
+int parse_ifindex_or_ifname(const char *s);
 int parse_mtu(int family, const char *s, uint32_t *ret);
 
 int parse_size(const char *t, uint64_t base, uint64_t *size);