patch 8.0.1626: compiler warning for possible loss of data

Problem:    Compiler warning for possible loss of data.
Solution:   Use size_t instead of int. (Christian Brabandt)
diff --git a/src/version.c b/src/version.c
index 3c57f0a..e4878d6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1626,
+/**/
     1625,
 /**/
     1624,