patch 8.2.1119: configure fails with Xcode 12 beta

Problem:    Configure fails with Xcode 12 beta.
Solution:   use "return" instead of "exit()". (Nico Weber, closes #6381)
diff --git a/src/version.c b/src/version.c
index c334ec6..ae2a95f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1119,
+/**/
     1118,
 /**/
     1117,