patch 8.1.1663: compiler warning for using size_t

Problem:    Compiler warning for using size_t.
Solution:   Add type cast. (Mike Williams)
diff --git a/src/popupwin.c b/src/popupwin.c
index f2b3130..484f774 100644
--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -199,7 +199,7 @@
 	getvcol(textwp, &pos, &mcol, NULL, NULL);
 	wp->w_popup_mouse_mincol = mcol;
 
-	pos.col = col + STRLEN(text) - 1;
+	pos.col = col + (colnr_T)STRLEN(text) - 1;
 	getvcol(textwp, &pos, NULL, NULL, &mcol);
 	wp->w_popup_mouse_maxcol = mcol;
 	vim_free(text);
diff --git a/src/version.c b/src/version.c
index ae44f51..7b77979 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1663,
+/**/
     1662,
 /**/
     1661,