updated for version 7.4.574
Problem:    No error for eval('$').
Solution:   Check for empty name. (Yasuhiro Matsumoto)
diff --git a/src/version.c b/src/version.c
index ed1a6e3..51a1a16 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    574,
+/**/
     573,
 /**/
     572,