[gdb/testsuite, tclint] Fix lib/go.exp

gdb/tclint.toml

diff --git a/gdb/tclint.toml b/gdb/tclint.toml
index 589f352..522b6ec 100644
--- a/gdb/tclint.toml
+++ b/gdb/tclint.toml
@@ -43,7 +43,6 @@
 "gdb/testsuite/lib/gdbserver-support.exp",
 "gdb/testsuite/lib/gdb-utils.exp",
 "gdb/testsuite/lib/gen-perf-test.exp",
-"gdb/testsuite/lib/go.exp",
 "gdb/testsuite/lib/jit-elf-helpers.exp",
 "gdb/testsuite/lib/mi-support.exp",
 "gdb/testsuite/lib/objc.exp",

gdb/testsuite/lib/go.exp

diff --git a/gdb/testsuite/lib/go.exp b/gdb/testsuite/lib/go.exp
index 5f668e2..dcf7ffa 100644
--- a/gdb/testsuite/lib/go.exp
+++ b/gdb/testsuite/lib/go.exp
@@ -20,11 +20,12 @@
 # The result is 1 (true) for success, 0 (false) for failure.
 
 proc set_lang_go {} {
-    if [gdb_test_no_output "set language go"] {
+    if {[gdb_test_no_output "set language go"]} {
 	return 0
     }
-    if [gdb_test "show language" ".* source language is \"go\"." \
-	   "set language to \"go\""] {
+    if {[gdb_test "show language" \
+	     [string_to_regexp {The current source language is "go".}] \
+	     {set language to "go"}]} {
 	return 0
     }
     return 1