checkpatch: g_test_message does not need a trailing newline

Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

scripts/checkpatch.pl

@@ -2752,7 +2752,8 @@ sub process {
 				info_vreport|
 				error_report|
 				warn_report|
-				info_report}x;
+				info_report|
+				g_test_message}x;
 
 	if ($rawline =~ /\b(?:$qemu_error_funcs)\s*\(.*\".*\\n/) {
 		ERROR("Error messages should not contain newlines\n" . $herecurr);