Michel Dänzer authored Jan 28, 2020 and Peter Hutterer committed Jan 28, 2020

GCC warned about it:

../test/misc.c:36:19: warning: redundant redeclaration of ‘screenInfo’ [-Wredundant-decls]
   36 | extern ScreenInfo screenInfo;
      |                   ^~~~~~~~~~
In file included from ../test/misc.c:30:
../include/scrnintstr.h:688:29: note: previous declaration of ‘screenInfo’ was here
  688 | extern _X_EXPORT ScreenInfo screenInfo;
      |                             ^~~~~~~~~~