hp-3457a: free memory that was allocated by SCPI get routines

The SCPI get routines may allocate memory for response data which
callers have to free after use.

This addresses part of bug #1683.

diff --git a/src/hardware/hp-3457a/api.c b/src/hardware/hp-3457a/api.c
index 64fdab54deef5cbc875d57f3b3c07fbb84a498c5..6e42bb9ac91f23b1ad8c0c4cce47284763e96997 100644 (file)
--- a/src/hardware/hp-3457a/api.c
+++ b/src/hardware/hp-3457a/api.c
@@ -138,8 +138,10 @@ static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
        if ((ret != SR_OK) || !response)
                return NULL;
 
-       if (strcmp(response, "HP3457A"))
+       if (strcmp(response, "HP3457A")) {
+               g_free(response);
                return NULL;
+       }
 
        g_free(response);