patch 8.1.1906: info popup size is sometimes incorrect

Problem:    Info popup size is sometimes incorrect.
Solution:   Compute the position and size after setting the content.
diff --git a/src/version.c b/src/version.c
index ae0bd9c..6d5f96e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1906,
+/**/
     1905,
 /**/
     1904,