patch 8.0.1173: terminal window is not redrawn after CTRL-L

Problem:    Terminal window is not redrawn after CTRL-L. (Marcin Szamotulski)
Solution:   Redraw the whole terminal when w_redr_type is NOT_VALID.
diff --git a/src/version.c b/src/version.c
index 6e3f90a..ab0d57d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1173,
+/**/
     1172,
 /**/
     1171,