fx2lafw: silence "NULL dereference" compiler warning

Check pointers' validity before dereferencing them.

This was reported by clang's scan-build.

diff --git a/src/hardware/fx2lafw/api.c b/src/hardware/fx2lafw/api.c
index a2de010a27defc3464fb7f0188093fe2aaa9d48f..adae8045ae8233ab4f8c8d766c6c14cf0ba0d7b4 100644 (file)
--- a/src/hardware/fx2lafw/api.c
+++ b/src/hardware/fx2lafw/api.c
@@ -540,6 +540,8 @@ static int config_list(uint32_t key, GVariant **data,
        case SR_CONF_DEVICE_OPTIONS:
                return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
        case SR_CONF_SAMPLERATE:
+               if (!devc)
+                       return SR_ERR_NA;
                *data = std_gvar_samplerates(devc->samplerates, devc->num_samplerates);
                break;
        case SR_CONF_TRIGGER_MATCH: