vty: suppress warnings about len being set but not used
This commit fixes the following warning seen with CC=clang:
utils.c:376:6: warning: variable 'len' set but not used [-Wunused-but-set-variable]
int len = 0, offset = 0, ret, rem;
... and finally allows to build libosmocore with --enable-werror.
Change-Id: I0040ef20ba3fc53ee7ccefc4885170f333f80566
diff --git a/src/vty/utils.c b/src/vty/utils.c
index a651515..0f5a34e 100644
--- a/src/vty/utils.c
+++ b/src/vty/utils.c
@@ -415,6 +415,7 @@
if (ret < 0)
goto err;
OSMO_SNPRINTF_RET(ret, rem, offset, len);
+ (void)len; /* suppress warnings about len being set but not used */
err:
str[size-1] = '\0';
return str;