luci-base: datatypes.lua: add missing parentheses in conditional

The missing parens lead to a wrong expression precedence, causing a runtime
error when attempting to compare nil with a number.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

diff --git a/modules/luci-base/luasrc/cbi/datatypes.lua b/modules/luci-base/luasrc/cbi/datatypes.lua
index 2039a35..98f6a44 100644 (file)
--- a/modules/luci-base/luasrc/cbi/datatypes.lua
+++ b/modules/luci-base/luasrc/cbi/datatypes.lua
@@ -139,7 +139,7 @@ function ipmask4(val)
        local ip, mask = val:match("^([^/]+)/([^/]+)$")
        local bits = tonumber(mask)
 
-       if bits and bits < 0 or bits > 32 then
+       if bits and (bits < 0 or bits > 32) then
                return false
        end
 
@@ -154,7 +154,7 @@ function ipmask6(val)
        local ip, mask = val:match("^([^/]+)/([^/]+)$")
        local bits = tonumber(mask)
 
-       if bits and bits < 0 or bits > 128 then
+       if bits and (bits < 0 or bits > 128) then
                return false
        end