We have a string describing the ICC profile. cmsGetProfileVersion()
returns a float value, and we are converting that to string with "%f"
and saving to this description. Instead, use "%.1f" to restrict it to a
single decimal value, which is enough. With this change we have e.g.
"version 4.4" instead of "version 4.4000000".
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>