output: Fix fmtstr return value

The function fmtstr is meant to return the actual length of output
produced, rather than the untruncated length.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/output.c b/src/output.c
index 4d3b4c2..34243ea 100644
--- a/src/output.c
+++ b/src/output.c
@@ -286,7 +286,7 @@ fmtstr(char *outbuf, size_t length, const char *fmt, ...)
 	va_start(ap, fmt);
 	ret = xvsnprintf(outbuf, length, fmt, ap);
 	va_end(ap);
-	return ret;
+	return ret > (int)length ? length : ret;
 }