Add a context-info.sh test for 0xFF chars

Add a non-regression test for ssl_context_info to ensure the base64
decoder doesn't stop processing when it encounters a 0xFF character.

Signed-off-by: David Brown <david.brown@linaro.org>
diff --git a/tests/context-info.sh b/tests/context-info.sh
index 150584b..68614ff 100755
--- a/tests/context-info.sh
+++ b/tests/context-info.sh
@@ -430,6 +430,11 @@
          -u "Too many bad symbols detected. File check aborted" \
          -n "Deserializing"
 
+run_test "Decoder continues past 0xff character" \
+         "def_b64_ff.bin" \
+         -n "No valid base64" \
+         -u "ciphersuite.* TLS-"
+
 
 # End of tests