base:gl: check xlib-xcb.h
On MacOS with homebrew the xlib-xcb.h is not found in gst-plugins-base/tests build
Fixes #976 (closed)
Edited by Stéphane Cerveau
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On MacOS with homebrew the xlib-xcb.h is not found in gst-plugins-base/tests build
Fixes #976 (closed)