patch 8.0.0078

Problem:    Accessing freed memory in quickfix.
Solution:   Reset pointer when freeing 'errorformat'. (Domenique Pelle)

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    78,
 /**/
     77,
 /**/