patch 8.1.1594: may still start file dialog while exiting

Problem:    May still start file dialog while exiting.
Solution:   Ignore the "browse" modifier in another place when exiiting.
            (Ozaki Kiichi, closes #4582)
diff --git a/src/version.c b/src/version.c
index c25c1ff..369962921 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1594,
+/**/
     1593,
 /**/
     1592,