refactor and add su

1 files changed, 3 insertions, 3 deletions

diff --git a/command/tail.c b/command/tail.c
index 8137eca..64f4608 100644
--- a/command/tail.c
+++ b/command/tail.c
@@ -23,10 +23,10 @@ static size_t tail_file_lines(FILE* file, unsigned int count, size_t skip) {
     size_t len;
     char* line;
 
-    ring = malloc(sizeof(char*) * count);
+    ring = xalloc(sizeof(char*) * count);
     memset(ring, 0, sizeof(char*) * count);
 
-    ring_len = malloc(sizeof(int) * count);
+    ring_len = xalloc(sizeof(int) * count);
     
     index = 0;
     size = 0;
@@ -74,7 +74,7 @@ static size_t tail_file_chars(FILE* file, unsigned int count, size_t skip) {
     unsigned int size, i;
     int read, c;
 
-    ring = malloc(sizeof(char) * count);
+    ring = xalloc(sizeof(char) * count);
     memset(ring, 0, count);
 
     index = 0;