Bug 1668926 - fix member initialization in nsMessenger::nsFilePickerShownCallback::nsFilePickerShownCallback. r=benc

CID 1416479 (#1 of 1): Uninitialized scalar field (UNINIT_CTOR)2. uninit_member: Non-static class member mResult is not initialized in this constructor nor in any functions that it calls.

Differential Revision: https://phabricator.services.mozilla.com/D111623

--HG--
extra : rebase_source : d6bc34342d31465bdaaf2e7573959e81a5ecc746

mailnews/base/src/nsMessenger.cpp

@@ -288,6 +288,7 @@ NS_IMETHODIMP nsMessenger::SetDisplayCharset(const nsACString& aCharset) {
 NS_IMPL_ISUPPORTS(nsMessenger::nsFilePickerShownCallback,
                   nsIFilePickerShownCallback)
 nsMessenger::nsFilePickerShownCallback::nsFilePickerShownCallback() {
+  mResult = nsIFilePicker::returnOK;
   mPickerDone = false;
 }