Fix shellcheck issue

Signed-off-by: Martin Melik Merkumians <martin.melik@gmail.com>

run_sanitizer_tests.sh

@@ -72,7 +72,7 @@ TEST_RESULT=$?
 
 echo ""
 echo "=============================================="
-if [ $TEST_RESULT -eq 0 ]; then
+if [ "$TEST_RESULT" -eq 0 ]; then
     echo "✓ All tests passed!"
 else
     echo "✗ Tests failed with exit code: $TEST_RESULT"