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-rw-r--r--resolv/inet_net_pton.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/resolv/inet_net_pton.c b/resolv/inet_net_pton.c
index bf6fe02ed8..d3f1350312 100644
--- a/resolv/inet_net_pton.c
+++ b/resolv/inet_net_pton.c
@@ -107,8 +107,7 @@ inet_net_pton_ipv4(src, dst, size)
 		src++;	/* skip x or X. */
 		while ((ch = *src++) != '\0' &&
 		       isascii(ch) && isxdigit(ch)) {
-			if (isupper(ch))
-				ch = tolower(ch);
+			ch = _tolower(ch);
 			n = strchr(xdigits, ch) - xdigits;
 			assert(n >= 0 && n <= 15);
 			*dst |= n;