dsp: bios_table: Null check for pldm_bios_table_iter_is_end()
GCC's -fanalyzer identified the following:
```
In file included from ../tests/dsp/bios_table_iter.c:15:
../src/dsp/bios_table.c: In function ‘pldm_bios_table_iter_is_end’:
../src/dsp/bios_table.c:991:17: error: dereference of NULL ‘iter’ [CWE-476] [-Werror=analyzer-null-dereference]
991 | if (iter->table_len - iter->current_pos <= pad_and_check_max) {
| ~~~~^~~~~~~~~~~
```
As a safety measure, return true to indicate the end of the iterator if
the iterator is null.
Fixes: 9c76679224cf ("libpldm: Migrate to subproject")
Change-Id: I18eec144120054de33eb351f9a80dee936118126
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
diff --git a/tests/dsp/bios_table.cpp b/tests/dsp/bios_table.cpp
index c2b73ea..99e17ba 100644
--- a/tests/dsp/bios_table.cpp
+++ b/tests/dsp/bios_table.cpp
@@ -484,6 +484,8 @@
pldm_bios_table_iter_next(iter);
EXPECT_TRUE(pldm_bios_table_iter_is_end(iter));
pldm_bios_table_iter_free(iter);
+
+ EXPECT_TRUE(pldm_bios_table_iter_is_end(nullptr));
}
TEST(AttrTable, FindTest)