srd_inst_decode(): Return SRD_ERR_ARG if unitsize is 0.

diff --git a/instance.c b/instance.c
index 86b826f25f9bb6656965c4522f2c99c29470114e..b1bfd81ce0bf2fef4281087ce5f967d3afc75061 100644 (file)
--- a/instance.c
+++ b/instance.c
@@ -558,6 +558,10 @@ SRD_PRIV int srd_inst_decode(const struct srd_decoder_inst *di,
                srd_dbg("empty buffer");
                return SRD_ERR_ARG;
        }
+       if (unitsize == 0) {
+               srd_dbg("unitsize 0");
+               return SRD_ERR_ARG;
+       }
 
        ((struct srd_decoder_inst *)di)->data_unitsize = unitsize;