libsemanage direct_api can return errors < 0.

[Daniel J Walsh <dwalsh@xxxxxxxxxx>]

--- nsalibsemanage/src/direct_api.c	2009-01-13 08:45:35.000000000 -0500
+++ libsemanage-2.0.31/src/direct_api.c	2009-06-02 14:54:20.000000000 -0400
@@ -991,7 +991,7 @@
 
 	int retval = -1;
 	char *data = NULL;
-	size_t data_len = 0;
+	ssize_t data_len = 0;
 	int compressed = 0;
 	int in_fd = -1;
 
@@ -999,7 +999,7 @@
 		return -1;
 	}
 
-	if ((data_len = map_file(in_fd, &data, &compressed)) == 0) {
+	if ((data_len = map_file(in_fd, &data, &compressed)) <= 0) {
 		goto cleanup;
 	}
 		
@@ -1117,7 +1117,7 @@
 {
 	int retval = -1;
 	char *data = NULL;
-	size_t data_len = 0;
+	ssize_t data_len = 0;
 	int compressed = 0;
 	int in_fd = -1;
 
@@ -1125,7 +1125,7 @@
 		return -1;
 	}
 
-	if ((data_len = map_file(in_fd, &data, &compressed)) == 0) {
+	if ((data_len = map_file(in_fd, &data, &compressed)) <= 0) {
 		goto cleanup;
 	}
 
@@ -1187,7 +1187,7 @@
 {
 	int retval = -1;
 	char *data = NULL;
-	size_t data_len = 0;
+	ssize_t data_len = 0;
 	int compressed = 0;
 	int in_fd;
 
@@ -1195,7 +1195,7 @@
 		return -1;
 	}
 
-	if ((data_len = map_file(in_fd, &data, &compressed)) == 0) {
+	if ((data_len = map_file(in_fd, &data, &compressed)) <= 0) {
 		goto cleanup;
 	}