patch 7.4.704
Problem:    Searching for a character matches an illegal byte and causes
            invalid memory access. (Dominique Pelle)
Solution:   Do not match an invalid byte when search for a character in a
            string.  Fix equivalence classes using negative numbers, which
            result in illegal bytes.
diff --git a/src/version.c b/src/version.c
index d211340..11dd808 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    704,
+/**/
     703,
 /**/
     702,