scripts/specialize-patch: Add a comment

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@7440 d57e44dd-8a1f-0410-8b47-8ef2f437770f

scripts/specialize-patch

@@ -647,6 +647,8 @@ BEGIN {
   else if (lines >= 2 && !match(line[lines-2], ":$") &&
            line[lines-1] == "+\x9return;" && $0 == "+}")
   {
+    # Delete "return;" statements at the end of a function that are not
+    # preceded by a label.
     line[lines-1] = $0
     lines_less_added++
   }