patch 8.1.0074: crash when running quickfix tests

Problem:    Crash when running quickfix tests.
Solution:   Do not alloc a new location list when checking for the reference
            to be still valid.

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    74,
 /**/
     73,
 /**/