Remove non-breaking space from library_glfw.js

[aidanhs]

See https://github.com/kripken/emscripten/blob/70173560dc471ed8d72eb834bba9c28d2507d828/src/library_glfw.js#L579 - github actually highlights the nbsp.

Example of the nbsp in master:

emsdk_portable/emscripten/master $ grep -bF 'GLFW.cancelFullScreen' src/library_glfw.js
21813:          GLFW.cancelFullScreen();
emsdk_portable/emscripten/master $ dd if=src/library_glfw.js bs=1 skip=21803 count=9 2>/dev/null | xxd
0000000: 7d20 656c 7365 c2a0 7b                   } else..{

This causes (at least) my version of Chromium to choke.

[kripken]

Thanks. I wonder why this didn't cause problems anywhere else...

[aidanhs]

Apparently my version of Chromium doesn't obey the spec - http://www.ecma-international.org/ecma-262/5.1/#sec-7.2

Another bug to raise I guess...

[aidanhs]

Aha, this is actually technically a bug of mine - I created my own html file without <meta charset="utf-8">.
Sorry!

[kripken]

Heh, no worries, good to have this fixed either way.