controller.c: Add checks for srd_inst_option_set().

This also fixes some unit tests that were previously failing.

diff --git a/controller.c b/controller.c
index 635e47e6eae41aef5904213721eb501da50b1597..ebb9f3adb768df970da9d886b882e2df01fb950d 100644 (file)
--- a/controller.c
+++ b/controller.c
@@ -305,6 +305,16 @@ SRD_API int srd_inst_option_set(struct srd_decoder_inst *di,
        const char *val_str;
        char *dbg, *key;
 
+       if (!di) {
+               srd_err("Invalid decoder instance.");
+               return SRD_ERR_ARG;
+       }
+
+       if (!options) {
+               srd_err("Invalid options GHashTable.");
+               return SRD_ERR_ARG;
+       }
+
        if (!PyObject_HasAttrString(di->decoder->py_dec, "options")) {
                /* Decoder has no options. */
                if (g_hash_table_size(options) == 0) {