stray '\' in several gstreamer related files

[Connor McLaughlan <cont6pro3%gmail.com@localhost>]

Hi,

my system is debian linux on sparc on which i am using a bootstrapped
pkgsrc-2020Q1

Several gstreamer-related files won't compile unless stray '\' are
removed on includes.

Affected files:

/usr/pkgsrc/multimedia/gstreamer1/work/gstreamer-1.16.2/libs/gst/controller/controller-enumtypes.c
/usr/pkgsrc/multimedia/gst-plugins1-base/work/gst-plugins-base-1.16.2/gst-libs/gst/tag/tag-enumtypes.c
/usr/pkgsrc/multimedia/gst-plugins1-base/work/gst-plugins-base-1.16.2/gst-libs/gst/audio/audio-enumtypes.c
/usr/pkgsrc/multimedia/gst-plugins1-base/work/gst-plugins-base-1.16.2/gst-libs/gst/video/video-enumtypes.c
/usr/pkgsrc/multimedia/gst-plugins1-base/work/gst-plugins-base-1.16.2/gst-libs/gst/app/app-enumtypes.c
/usr/pkgsrc/multimedia/gst-plugins1-base/work/gst-plugins-base-1.16.2/gst-libs/gst/rtp/gstrtp-enumtypes.c
/usr/pkgsrc/multimedia/gst-plugins1-base/work/gst-plugins-base-1.16.2/gst-libs/gst/rtsp/gstrtsp-enumtypes.c
/usr/pkgsrc/multimedia/gst-plugins1-base/work/gst-plugins-base-1.16.2/gst-libs/gst/pbutils/pbutils-enumtypes.c

Regards,
Connor