[LyX/master] Add comment to fix coverity #23438.

[Richard Heck]

commit ae676958d922068ff5890f29d7cf983c7ae00b6a
Author: Richard Heck <rgh...@lyx.org>
Date:   Sat Jun 11 23:47:54 2016 -0400

    Add comment to fix coverity #23438.

diff --git a/src/mathed/MathAutoCorrect.cpp b/src/mathed/MathAutoCorrect.cpp
index 3e1405b..2af6c4b 100644
--- a/src/mathed/MathAutoCorrect.cpp
+++ b/src/mathed/MathAutoCorrect.cpp
@@ -35,6 +35,9 @@ namespace {
 class Correction {
 public:
        ///
+       /// \brief Correction
+       // it is fine not to initialize from2_
+       // coverity[UNINIT_CTOR]
        Correction() {}
        ///
        bool correct(MathAtom & at, char_type c) const;