util.{interpolation,prosodyctl,sql}: Trim trailing whitespace

util/interpolation.lua

@@ -1,6 +1,6 @@
 -- Simple template language
 --
--- The new() function takes a pattern and an escape function and returns 
+-- The new() function takes a pattern and an escape function and returns
 -- a render() function.  Both are required.
 --
 -- The function render() takes a string template and a table of values.
@@ -9,14 +9,14 @@
 -- symbol.
 --
 -- Variants are:
--- {name} is substituted for values["name"] and is escaped using the 
+-- {name} is substituted for values["name"] and is escaped using the
 -- second argument to new_render().  To disable the escaping, use {name!}.
 -- {name.item} can be used to access table items.
 -- To renter lists of items: {name# item number {idx} is {item} }
 -- Or key-value pairs: {name% t[ {idx} ] = {item} }
--- To show a defaults for missing values {name? sub-template } can be used, 
+-- To show a defaults for missing values {name? sub-template } can be used,
 -- which renders a sub-template if values["name"] is false-ish.
--- {name& sub-template } does the opposite, the sub-template is rendered 
+-- {name& sub-template } does the opposite, the sub-template is rendered
 -- if the selected value is anything but false or nil.
 
 local type, tostring = type, tostring;