give_map_diff always prints warning on many beginning maps

[Aze-M]

Even on a new character with 197 health at this point maps like sfor (G_Warn_HP of 25) edana and chapel (both without g_warn_hp) still result in a 'this map may be to difficult' warning.

Looks like it may be using the wrong way to get max hp sincs it is not using $get and the function it is using I can only find in monster scripts.

[greatguys1]

Warnings often arent replaced when changing to a new map. I think changes to another relevant script may have fixed this issue. Needs testing.