File efivar-boo961664-fix-return-value.patch of Package efivar.4523

commit 3a820e05eeac0b069f46582cb34f364000feb996
Author: Peter Jones <pjones@redhat.com>
Date:   Mon Jul 13 13:14:58 2015 -0400

    Fix return value checking in efi_guid_to_name and efi_guid_to_symbol.
    
    I really have no idea how that was supposed to work.
    
    This needs a better test suite.
    
    Signed-off-by: Peter Jones <pjones@redhat.com>

diff --git a/src/guid.c b/src/guid.c
index 345443f..35d9d1a 100644
--- a/src/guid.c
+++ b/src/guid.c
@@ -117,7 +117,7 @@ efi_guid_to_name(efi_guid_t *guid, char **name)
 {
 	struct guidname *result;
 	int rc = _get_common_guidname(guid, &result);
-	if (rc < 0) {
+	if (rc >= 0) {
 		*name = strndup(result->name, sizeof (result->name) -1);
 		return *name ? (int)strlen(*name) : -1;
 	}
@@ -131,7 +131,7 @@ efi_guid_to_symbol(efi_guid_t *guid, char **symbol)
 {
 	struct guidname *result;
 	int rc = _get_common_guidname(guid, &result);
-	if (rc < 0) {
+	if (rc >= 0) {
 		*symbol = strndup(result->symbol, sizeof (result->symbol) -1);
 		return *symbol ? (int)strlen(*symbol) : -1;
 	}