Fix crash with invalid radius

diff --git a/technic/machines/HV/quarry.lua b/technic/machines/HV/quarry.lua
index bf0cd094abbf605cd70b5f38d8d1bc3565844047..a62be8f2a8879fcb5538cd2932937852eebd5e63 100644 (file)
--- a/technic/machines/HV/quarry.lua
+++ b/technic/machines/HV/quarry.lua
@@ -20,7 +20,7 @@ end
 
 local function quarry_receive_fields(pos, formname, fields, sender)
        local meta = minetest.get_meta(pos)
-       local size = tonumber(fields.size)
+       local size = tonumber(fields.size) or 0
 
        if fields.toggle then
                if meta:get_int("enabled") == 0 then
@@ -30,8 +30,7 @@ local function quarry_receive_fields(pos, formname, fields, sender)
                end
        end
 
-       -- Smallest size is 2. Anything less is asking for trouble.
-       -- Largest is 8. It is a matter of pratical node handling.
+       -- Smallest size is 2. Largest is 8.
        size = math.max(size, 2)
        size = math.min(size, 8)