patch 8.1.0598: indent tests may use the wrong Vim binary

Problem:    Indent tests may use the wrong Vim binary.
Solution:   Pass in the just built Vim binary.
diff --git a/src/version.c b/src/version.c
index a85295a..7e8b34e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    598,
+/**/
     597,
 /**/
     596,