patch 7.4.981

Problem:    An error in a test script goes unnoticed.
Solution:   Source the test script inside try/catch. (Hirohito Higashi)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    981,
 /**/
     980,
 /**/