use util_[cm]alloc() where appropriate

@@ -99,7 +99,7 @@ alias_rehash()
       return 1;
     }
 
-  aliases = calloc(hash_size[hash_num], sizeof (aliases[0]));
+  aliases = util_calloc(hash_size[hash_num], sizeof (aliases[0]));
   if (old_aliases)
     {
       for (i = 0; i < hash_size[hash_num-1]; i++)

@@ -72,12 +72,7 @@ mail_set_my_name (char *name)
   my_name = strdup (name);
   gethostname(hostname, sizeof(hostname));
   hostname[sizeof(hostname)-1] = 0;
-  my_email = malloc (strlen (name) + strlen (hostname) + 2);
-  if (!my_email)
-    {
-      util_error("not enough memory");
-      abort ();
-    }
+  my_email = util_malloc (strlen (name) + strlen (hostname) + 2);
   sprintf (my_email, "%s@%s", name, hostname);
 }
    

@@ -73,7 +73,7 @@ parse_opt (int key, char *arg, struct argp_state *state)
 	  int len;
 	  char *home = getenv("HOME");
 	  len = strlen (home) + strlen ("/mbox") + 1;
-	  args->file = malloc(len * sizeof (char));
+	  args->file = util_malloc(len * sizeof (char));
 	  strcpy (args->file, home);
 	  strcat (args->file, "/mbox");
 	}
@@ -391,7 +391,7 @@ mail_mainloop(char *(*input) __P((void *, int)), void *closure, int do_history)
 	      break;
 	    }
 	  command[len-1] = '\0';
-	  buf = malloc ((len + strlen (command2)) * sizeof (char));
+	  buf = util_malloc ((len + strlen (command2)) * sizeof (char));
 	  strcpy (buf, command);
 	  strcat (buf, command2);
 	  free (command);

@@ -48,7 +48,7 @@ mail_shell (int argc, char **argv)
 	  char *buf = NULL;
 
 	  /* 1(shell) + 1 (-c) + 1(arg) + 1 (null) = 4  */
-	  argvec = malloc (4 * (sizeof (char *)));
+	  argvec = util_malloc (4 * (sizeof (char *)));
 
 	  argcv_string (argc-1, &argv[1], &buf);
 

@@ -31,7 +31,7 @@ mail_unset (int argc, char **argv)
       int status = 0, i = 1;
       for (i=1; i < argc; i++)
 	{
-	  char *buf = malloc ((7+strlen (argv[i])) * sizeof (char));
+	  char *buf = util_malloc ((7+strlen (argv[i])) * sizeof (char));
 	  strcpy (buf, "set no");
 	  strcat (buf, argv[i]);
 	  if (!util_do_command (buf))