patch 9.0.1482: crash when textprop has a very large "padding" value

Problem:    Crash when textprop has a very large "padding" value. (Yegappan
            Lakshmanan)
Solution:   Avoid the "after" count to go negative.
diff --git a/src/version.c b/src/version.c
index a87121f..aa480c1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1482,
+/**/
     1481,
 /**/
     1480,