Fix glitch in f0b57a7: abs called on unsigned type.
Fix glitch in f0b57a7: abs called on unsigned type.

Change-Id: I33ff5e712e1791f857c1b04d2ee2625499e47e09

aldebaran/libqi,aldebaran/libqi,bsautron/libqi,vbarbaresi/libqi,aldebaran/libqi