tests/bios-tables-test: Sanitize test verbose output

Fix the extraneous extra blank lines in the test output when running with V=1.

Before:

    TEST: tests/bios-tables-test... (pid=25678)
      /i386/acpi/piix4:
    Looking for expected file 'tests/acpi-test-data/pc/DSDT'

    Using expected file 'tests/acpi-test-data/pc/DSDT'

    Looking for expected file 'tests/acpi-test-data/pc/FACP'

    Using expected file 'tests/acpi-test-data/pc/FACP'

    Looking for expected file 'tests/acpi-test-data/pc/APIC'

    Using expected file 'tests/acpi-test-data/pc/APIC'

    Looking for expected file 'tests/acpi-test-data/pc/HPET'

    Using expected file 'tests/acpi-test-data/pc/HPET'
    OK

After:

    TEST: tests/bios-tables-test... (pid=667)
      /i386/acpi/piix4:
    Looking for expected file 'tests/acpi-test-data/pc/DSDT'
    Using expected file 'tests/acpi-test-data/pc/DSDT'
    Looking for expected file 'tests/acpi-test-data/pc/FACP'
    Using expected file 'tests/acpi-test-data/pc/FACP'
    Looking for expected file 'tests/acpi-test-data/pc/APIC'
    Using expected file 'tests/acpi-test-data/pc/APIC'
    Looking for expected file 'tests/acpi-test-data/pc/HPET'
    Using expected file 'tests/acpi-test-data/pc/HPET'
    OK
Suggested-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NThomas Huth <thuth@redhat.com>

tests/bios-tables-test.c

@@ -372,6 +372,9 @@ static GArray *load_expected_aml(test_data *data)
     gboolean ret;
 
     GArray *exp_tables = g_array_new(false, true, sizeof(AcpiSdtTable));
+    if (getenv("V")) {
+        fputc('\n', stderr);
+    }
     for (i = 0; i < data->tables->len; ++i) {
         AcpiSdtTable exp_sdt;
         gchar *aml_file = NULL;
@@ -386,7 +389,7 @@ try_again:
         aml_file = g_strdup_printf("%s/%s/%.4s%s", data_dir, data->machine,
                                    (gchar *)&sdt->header.signature, ext);
         if (getenv("V")) {
-            fprintf(stderr, "\nLooking for expected file '%s'\n", aml_file);
+            fprintf(stderr, "Looking for expected file '%s'\n", aml_file);
         }
         if (g_file_test(aml_file, G_FILE_TEST_EXISTS)) {
             exp_sdt.aml_file = aml_file;
@@ -398,7 +401,7 @@ try_again:
         }
         g_assert(exp_sdt.aml_file);
         if (getenv("V")) {
-            fprintf(stderr, "\nUsing expected file '%s'\n", aml_file);
+            fprintf(stderr, "Using expected file '%s'\n", aml_file);
         }
         ret = g_file_get_contents(aml_file, &exp_sdt.aml,
                                   &exp_sdt.aml_len, &error);