Lua: fix Allocine for large result pages

Some pages are really huge, the only way we are sure we'll
be able to parse them is to download them entirely

share/lua/extensions/allocine-fr.lua

@@ -157,8 +157,13 @@ function click_chercher()
     vlc.keep_alive()
 
     -- Fetch HTML data (max 65 kb)
-    local data = s:read(65535)
+    local data = "", tmpdata
+    repeat
+       tmpdata = s:read(65535)
        vlc.keep_alive()
+       if not tmpdata then break end
+       data = data .. tmpdata
+    until tmpdata == ""
 
     -- Clean data
     data = string.gsub(data, "<b>", "")