Coverity: Fix leaking UCharsetDetector in ftp code.

webkit/glue/ftp_directory_listing_response_delegate.cc

Index: webkit/glue/ftp_directory_listing_response_delegate.cc
diff --git a/webkit/glue/ftp_directory_listing_response_delegate.cc b/webkit/glue/ftp_directory_listing_response_delegate.cc
index 64f529c4580823b5ab83a7026d0745a23c90b191..093973effd581b5816d0752bd31ab6755ba67166 100644
--- a/webkit/glue/ftp_directory_listing_response_delegate.cc
+++ b/webkit/glue/ftp_directory_listing_response_delegate.cc
@@ -38,6 +38,7 @@ std::string DetectEncoding(const std::string& text) {
                  &status);
   const UCharsetMatch* match = ucsdet_detect(detector, &status);
   const char* encoding = ucsdet_getName(match, &status);
+  ucsdet_close(detector);
   // Should we check the quality of the match? A rather arbitrary number is
   // assigned by ICU and it's hard to come up with a lower limit.
   if (U_FAILURE(status))