Missing MS_ABS for x axis in extent calcs - mapwms.c

[each2]

FC12 x64, 5.6.5 the extent calcs for an "adjust_extent" (line 1160) appear to be NOT getting the absolute value for the x axis, but appear to doing so for the y axis on the next few lines.

dx = (map->extent.maxx - map->extent.minx) / map->width;

This is inconsistent behaviour with other cases in the same code, e.g. line 955 (!nonsquare_enabled)

Wouldn't we expect it to be using MS_ABS like this?

dx = MS_ABS(map->extent.maxx - map->extent.minx) / map->width;

Additional note: in 5.4.2 neither x nor y are using MS_ABS.