[PATCH for v4.9 LTS 09/87] ipv6: Should use consistent conditional judgement for ip6 fragment between __ip6_append_data and ip6_finish_output

From: Zheng Li [ Upstream commit e4c5e13aa45c23692e4acf56f0b3533f328199b2 ] There is an inconsistent conditional judgement between __ip6_append_data and ip6_finish_output functions, the variable length in __ip6_append_data just include the length of application's

[PATCH for v4.9 LTS 09/87] ipv6: Should use consistent conditional judgement for ip6 fragment between __ip6_append_data and ip6_finish_output

From: Zheng Li [ Upstream commit e4c5e13aa45c23692e4acf56f0b3533f328199b2 ] There is an inconsistent conditional judgement between __ip6_append_data and ip6_finish_output functions, the variable length in __ip6_append_data just include the length of application's payload and udp6 header, don't