updated for version 7.4b.006

Problem:    Using \{n,m} in an autocommand pattern no longer works.
            Specifically, mutt temp files are not recognized. (Gary Johnson)
Solution:   Make \\\{n,m\} work.

src/version.c

@@ -727,6 +727,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    6,
 /**/
     5,
 /**/