use agetline instead of agets

also use agetline where fgets with a static buffer was used previously.

Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>

uniq.c

@@ -93,7 +93,7 @@ uniq(FILE *fp, const char *str)
 	char *buf = NULL;
 	size_t size = 0;
 
-	while(afgets(&buf, &size, fp))
+	while(agetline(&buf, &size, fp) != -1)
 		uniqline(buf);
 }