dummy.c: Conform to exact prototypes
authorJohn Darrington <john@darrington.wattle.id.au>
Sun, 30 Aug 2020 05:43:32 +0000 (07:43 +0200)
committerJohn Darrington <john@darrington.wattle.id.au>
Sun, 30 Aug 2020 07:48:34 +0000 (09:48 +0200)
commitf37e391fa8a6fd15c6c4be000237a66804fa9b5c
treedc33a8c0c183978df45673ef54ad1d2b52235187
parentff72dea565ea406e17beccc051d50e40e9294b08
dummy.c: Conform to exact prototypes

Apparently certain toolchains complain if the symbols in dummy.c do not
exactly match their declarations.  This should not be a problem unless
the compiler has enabled a lot of warnings, and is treating those warnings
as errors, (which is inadvisable except under very special circumstances).
However, it appears that some people are doing that.

This change ensures that they are identical.
src/ui/gui/dummy.c