Use implicit NULL tests

1 files changed, 2 insertions, 2 deletions

diff --git a/sort.c b/sort.c
index a5c09b1..ee4949d 100644
--- a/sort.c
+++ b/sort.c
@@ -7,7 +7,7 @@ int main(void) {
 
     lines = vec_init();
 
-    while ((line = read_line(stdin)) != NULL) {
+    while ((line = read_line(stdin))) {
         vec_add(lines, line);
     }
     free(line);
@@ -34,7 +34,7 @@ char *read_line(FILE* stream) {
 
     buf = malloc(BUF_SIZE);
     for (;;) {
-        if (fgets(buf, BUF_SIZE, stream) == NULL) {
+        if (!fgets(buf, BUF_SIZE, stream)) {
             free(buf);
             free(line);
             return NULL;