patch 8.0.0627: "gn" selects only one character with 'nowrapscan'

Problem:    When 'wrapscan' is off "gn" does not select the whole pattern when
            it's the last one in the text. (KeyboardFire)
Solution:   Check if the search fails. (Christian Brabandt, closes #1683)
diff --git a/src/version.c b/src/version.c
index 65dc83f..7a9b21c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    627,
+/**/
     626,
 /**/
     625,