patch 8.1.1784: MS-Windows: resolve() does not work if serial nr duplicated

Problem:    MS-Windows: resolve() does not work if serial nr duplicated.
Solution:   Use another method to get the full path. (Ken Takata, closes #4661)
diff --git a/src/version.c b/src/version.c
index b873471..b1d6f2b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1784,
+/**/
     1783,
 /**/
     1782,