* grub-core/normal/context.c (grub_env_context_close): Silence spurious

warning.
	* grub-core/normal/menu.c (grub_menu_execute_entry): Likewise.
	* grub-core/partmap/msdos.c (pc_partition_map_embed): Use unsigned
	counter.

grub-core/normal/context.c

@@ -148,7 +148,7 @@ grub_env_context_close (void)
 grub_err_t
 grub_env_extractor_close (int source)
 {
-  grub_menu_t menu, menu2;
+  grub_menu_t menu = NULL;
   grub_menu_entry_t *last;
   grub_err_t err;
 
@@ -161,6 +161,7 @@ grub_env_extractor_close (int source)
 
   if (source)
     {
+      grub_menu_t menu2;
       menu2 = grub_env_get_menu ();
       
       last = &menu2->entry_list;

grub-core/normal/menu.c

@@ -159,7 +159,7 @@ grub_menu_execute_entry(grub_menu_entry_t entry, int auto_boot)
 {
   grub_err_t err = GRUB_ERR_NONE;
   int errs_before;
-  grub_menu_t menu;
+  grub_menu_t menu = NULL;
   char *optr, *buf, *oldchosen = NULL, *olddefault = NULL;
   const char *ptr, *chosen, *def;
   grub_size_t sz = 0;

grub-core/partmap/msdos.c

@@ -234,7 +234,7 @@ pc_partition_map_embed (struct grub_disk *disk, unsigned int *nsectors,
 
   if (end >= *nsectors + 1)
     {
-      int i;
+      unsigned i;
       *nsectors = end - 1;
       *sectors = grub_malloc (*nsectors * sizeof (**sectors));
       if (!*sectors)