Fix getting window size #46
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At least for me (LOVE 11.4, LuaJIT 2.1.0-beta3), the basic repo does not work as is. If I take the sample code, there is no imgui window appearing.
Delving with
gdb, I figured out that the window width and height at the start ofNewFramewere always 0. I have very limited Lua FFI understand, as well as understanding of the stack. But I tried changing the float return to -1 (last value on the stack), and now the code works !So, here is my PR. I have no idea if this is affecting others.