patch 8.0.1772: quickfix: mixup of FALSE and FAIL, returning -1

Problem:    Quickfix: mixup of FALSE and FAIL, returning -1.
Solution:   Use FAIL and INVALID_QFIDX. (Yegappan Lakshmanan)

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1772,
 /**/
     1771,
 /**/