smatch: add marsam to maintainers

pkgs/development/tools/analysis/smatch/default.nix

···
   meta = with lib; {
     description = "A semantic analysis tool for C";
     homepage = "http://smatch.sourceforge.net/";
-    maintainers = with maintainers; [ ];
+    maintainers = with maintainers; [ marsam ];
     license = licenses.gpl2Plus;
     platforms = platforms.all;
   };