updated for version 7.4.526
Problem:    matchstr() fails on long text. Daniel Hahler)
Solution:   Return NFA_TOO_EXPENSIVE from regexec_nl(). (Christian Brabandt)
diff --git a/src/version.c b/src/version.c
index f65867c..80e2d35 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    526,
+/**/
     525,
 /**/
     524,