Bug 1366882 - Fix a resource leak - CID 1213977 - r=froydnj

MozReview-Commit-ID: 7Af5BXxaIZl

--HG--
extra : rebase_source : 121c3d2b88d1e44d7a35058c8fe689f602cf6425

intl/uconv/nsTextToSubURI.cpp

@@ -129,6 +129,7 @@ NS_IMETHODIMP  nsTextToSubURI::UnEscapeAndConvert(
   nsDependentCString label(charset);
   nsAutoCString encoding;
   if (!EncodingUtils::FindEncodingForLabelNoReplacement(label, encoding)) {
+    free(unescaped);
     return NS_ERROR_UCONV_NOCONV;
   }
   nsCOMPtr<nsIUnicodeDecoder> decoder =