opensock: work correctly on IPv6-only config

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

libc/inet/opensock.c

@@ -25,19 +25,19 @@
 #include <features.h>
 #include <libc-internal.h>
 
-/* libc_hidden_proto(socket) */
-
 /* Return a socket of any type.  The socket can be used in subsequent
    ioctl calls to talk to the kernel.  */
 int __opensock(void) attribute_hidden;
 int
-__opensock (void)
+__opensock(void)
 {
-  int fd;
+	int fd = -1;
 #ifdef __UCLIBC_HAS_IPV6__
-  fd = socket(AF_INET6, SOCK_DGRAM, 0);
-  if (fd<0)
-#endif /* __UCLIBC_HAS_IPV6__ */
-    fd = socket(AF_INET, SOCK_DGRAM, 0);
-  return(fd);
+	fd = socket(AF_INET6, SOCK_DGRAM, 0);
+#endif
+#ifdef __UCLIBC_HAS_IPV4__
+	if (fd < 0)
+		fd = socket(AF_INET, SOCK_DGRAM, 0);
+#endif
+	return fd;
 }