Misc. minor fixes

src/browser.c

@@ -131,7 +131,7 @@ struct dir *browse_sort(struct dir *list) {
 
 void browse_draw_info(struct dir *dr) {
   struct dir *t;
-  int i,j;
+  int i;
 
   nccreate(11, 60, "Item info");
 

src/calc.c

@@ -452,8 +452,10 @@ int calc_process() {
     free(name);
   free(path);
 
-  if(links != NULL)
+  if(links != NULL) {
     free(links);
+    links = NULL;
+  }
 
   /* success */
   if(!n && !failed) {

src/path.c

@@ -31,7 +31,6 @@
 #include <errno.h>
 #include <unistd.h>
 #include <limits.h>
-#include <dirent.h>
 
 #ifndef LINK_MAX
 # ifdef _POSIX_LINK_MAX