patch 8.1.1061: when substitute string throws error, substitute happens anyway

Problem:    When substitute string throws error, substitute happens anyway.
Solution:   Skip substitution when aborting. (closes #4161)
diff --git a/src/version.c b/src/version.c
index 69f2f06..07b3a0c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -776,6 +776,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1061,
+/**/
     1060,
 /**/
     1059,