patch 8.0.1755: MS-Windows: high unicode char received as two utf-16 words

Problem:    MS-Windows GUI: high unicode char received as two utf-16 words.
Solution:   Keep the first word until the second word is received. (Chris
            Morgan, closes #2800)
diff --git a/src/version.c b/src/version.c
index abf4910..5b41568 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1755,
+/**/
     1754,
 /**/
     1753,