Fix error propagation during expression evaluation.

git-svn-id: http://lm-sensors.org/svn/lm-sensors/branches/lm-sensors-3.0.0@5581 7894878c-1315-0410-8ee3-d5d059ff63e0

CHANGES

@@ -4,6 +4,7 @@ lm-sensors CHANGES file
 SVN-HEAD
   libsensors: Add support for instantaneous power sensors
               Add support for current sensors
+              Fix error propagation during expression evaluation
   maxilife scripts: Delete (driver never ported to Linux 2.6)
   sensord: Accept negative temperatures in RRD database
            Don't bail out on transient errors (#2330)

lib/access.c

@@ -437,10 +437,8 @@ int sensors_eval_expr(const sensors_chip_features *chip_features,
 		if (!(subfeature = sensors_lookup_subfeature_name(chip_features,
 							    expr->data.var)))
 			return -SENSORS_ERR_NO_ENTRY;
-		if (!(res = sensors_get_value(&chip_features->chip,
-					      subfeature->number, result)))
-			return res;
-		return 0;
+		return sensors_get_value(&chip_features->chip,
+					 subfeature->number, result);
 	}
 	if ((res = sensors_eval_expr(chip_features, expr->data.subexpr.sub1,
 				     val, &res1)))