patch 8.1.1346: error for Python exception does not show useful info

Problem:    Error for Python exception does not show useful info.
Solution:   Show the last line instead of the first one. (Ben Jackson,
            closes #4381)
diff --git a/src/testdir/test87.ok b/src/testdir/test87.ok
index a7d4f64..7ddea8f 100644
--- a/src/testdir/test87.ok
+++ b/src/testdir/test87.ok
@@ -91,7 +91,7 @@
 0.0
 "\0":	Vim(let):E859:
 {"\0": 1}:	Vim(let):E859:
-undefined_name:	Vim(let):Trace
+undefined_name:	Vim(let):NameE
 vim:	Vim(let):E859:
 [1]
 [1, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 1]