lua http: fix slash stripping

(cherry picked from commit c482dc5576eff200f77c4e77af40eb41ecaacacd)
Signed-off-by: Pierre Ynard <linkfanel@yahoo.fr>

share/lua/http/requests/status.xml

@@ -38,7 +38,7 @@ end
 ---[[]] vlc.msg.err("requests/status.xml got:","input: "..tostring(input),"command: "..tostring(command),"id: "..tostring(id),"val: "..tostring(val))
 
 local function stripslashes(s)
-  return string.gsub(s,"\\(%.)","%1")
+  return string.gsub(s,"\\(.)","%1")
 end
 
 local status = vlc.playlist.status()