[Lua] Potential issue with widget configure() (empty line)

[Alex00101]

Not sure if it was there before 1.5.11 (likely not):

configure handler code (note widget title is set for false):

local function configure(widget)
local line, panel, field
panel = form.addExpansionPanel("Panel 1")
line = form.addLine('Line 1', panel)
field = form.addNumberField(line, nil, 0,1000000, function() return 10 end, function(newValue) end)
end

The configure screen looks line (note the empty line):

if I change code to say

local function configure(widget)
local line, panel, field
line = form.addLine('New Line',nil)
panel = form.addExpansionPanel("Panel 1")
line = form.addLine('Line 1', panel)
field = form.addNumberField(line, nil, 0,1000000, function() return 10 end, function(newValue) end)
end

[bsongis-frsky]

Reproduced in 1.5.16. Only if the widget has no title!