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.
diff --git a/src/version.c b/src/version.c
index 36c57e2..09325fb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    74,
+/**/
     73,
 /**/
     72,