More appropriate buffer sizes

main.c

@@ -41,7 +41,7 @@ img_t img;
 win_t win;
 
 #define DNAME_CNT 512
-#define FNAME_CNT 4096
+#define FNAME_CNT 1024
 const char **filenames;
 int filecnt, fileidx;
 size_t filesize;

util.c

@@ -22,7 +22,7 @@
 #include "options.h"
 #include "util.h"
 
-#define FNAME_LEN 10
+#define FNAME_LEN 512
 
 void cleanup();