patch 7.4.1682

Problem:    Coverity: no check for NULL.
Solution:   Add check for invalid argument to assert_match().

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1682,
 /**/
     1681,
 /**/