patch 8.0.0392: GUI test fails with Athena and Motif
Problem: GUI test fails with Athena and Motif.
Solution: Add test_ignore_error(). Use it to ignore the "failed to create
input context" error.
diff --git a/src/proto/message.pro b/src/proto/message.pro
index c9d62c6..9a79f14 100644
--- a/src/proto/message.pro
+++ b/src/proto/message.pro
@@ -8,6 +8,7 @@
void reset_last_sourcing(void);
void msg_source(int attr);
int emsg_not_now(void);
+void ignore_error_for_testing(char_u *error);
void do_perror(char *msg);
int emsg(char_u *s);
int emsg2(char_u *s, char_u *a1);