patch 9.0.0972: build failure on some systems

Problem:    Build failure on some systems.
Solution:   Adjust #ifdefs related to the termresponse feature.
diff --git a/src/version.c b/src/version.c
index e625792..e41b106 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    972,
+/**/
     971,
 /**/
     970,