instance.c: Don't use 'di' before NULL-checking it.

diff --git a/instance.c b/instance.c
index bfe9142860d76829ce2f609ddbf1bd23fbe312f1..3fa3e5dc8b4ec857817f3ac4a8a3902789cef72b 100644 (file)
--- a/instance.c
+++ b/instance.c
@@ -546,14 +546,6 @@ SRD_PRIV int srd_inst_decode(const struct srd_decoder_inst *di,
        PyObject *py_res;
        srd_logic *logic;
 
-       ((struct srd_decoder_inst *)di)->data_unitsize = unitsize;
-
-       srd_dbg("Calling decode(), start sample %" PRIu64 ", end sample %"
-               PRIu64 " (%" PRIu64 " samples, %" PRIu64 " bytes, unitsize = "
-               "%d), instance %s.", start_samplenum, end_samplenum,
-               end_samplenum - start_samplenum, inbuflen, di->data_unitsize,
-               di->inst_id);
-
        /* Return an error upon unusable input. */
        if (!di) {
                srd_dbg("empty decoder instance");
@@ -568,6 +560,14 @@ SRD_PRIV int srd_inst_decode(const struct srd_decoder_inst *di,
                return SRD_ERR_ARG;
        }
 
+       ((struct srd_decoder_inst *)di)->data_unitsize = unitsize;
+
+       srd_dbg("Calling decode(), start sample %" PRIu64 ", end sample %"
+               PRIu64 " (%" PRIu64 " samples, %" PRIu64 " bytes, unitsize = "
+               "%d), instance %s.", start_samplenum, end_samplenum,
+               end_samplenum - start_samplenum, inbuflen, di->data_unitsize,
+               di->inst_id);
+
        /*
         * Create new srd_logic object. Each iteration around the PD's loop
         * will fill one sample into this object.