patch 7.4.992
Problem:    Makefiles for MS-Windows in src/po are outdated.
Solution:   Make them work. (Ken Takata, Taro Muraoka)
diff --git a/src/version.c b/src/version.c
index b10453e..9e77c6d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    992,
+/**/
     991,
 /**/
     990,