[botlib] Use floating point absolute value rather than truncate to integer

code/botlib/be_aas_move.c

@@ -168,7 +168,7 @@ int AAS_AgainstLadder(vec3_t origin)
 		//get the plane the face is in
 		plane = &aasworld.planes[face->planenum ^ side];
 		//if the origin is pretty close to the plane
-		if (abs(DotProduct(plane->normal, origin) - plane->dist) < 3)
+		if (fabsf(DotProduct(plane->normal, origin) - plane->dist) < 3)
 		{
 			if (AAS_PointInsideFace(abs(facenum), origin, 0.1f)) return qtrue;
 		} //end if