updated for version 7.4.557
Problem:    One more small issue.
Solution:   Update function proto.
diff --git a/src/version.c b/src/version.c
index 017bff6..514193a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    557,
+/**/
     556,
 /**/
     555,