Fix typos

src/libraries/luasocket/libluasocket/makefile

@@ -1,6 +1,6 @@
 # luasocket src/makefile
 #
-# Definitions in this section can be overriden on the command line or in the
+# Definitions in this section can be overridden on the command line or in the
 # environment.
 #
 # These are equivalent:

src/libraries/luasocket/libluasocket/smtp.lua

@@ -219,7 +219,7 @@ function send_message(mesgt)
     else send_string(mesgt) end
 end
 
--- set defaul headers
+-- set default headers
 local function adjust_headers(mesgt)
     local lower = lower_headers(mesgt.headers)
     lower["date"] = lower["date"] or