NSH: Fix redirection of output to a file. That was broken with recent changes

ChangeLog.txt

@@ -779,3 +779,5 @@
 	* apps/system/inifile:  A simple INI file parser (perhaps too simple).
 	  This is code that I wrote a long time ago and have used many time but
 	  is untested in its current incarnation (2014-1-15).
+	* aps/nshlib/nsh_parse.c:  Recent changes broke redirection of output
+	  (2014-1-14).

nshlib/nsh_parse.c

@@ -1216,12 +1216,12 @@ static FAR char *nsh_argument(FAR struct nsh_vtbl_s *vtbl, FAR char **saveptr,
       if (*(pbegin + 1) == '>')
         {
           *saveptr = pbegin + 2;
-          pbegin   = (char*)g_redirect2;
+          argument = (FAR char *)g_redirect2;
         }
       else
         {
           *saveptr = pbegin + 1;
-          pbegin   = (char*)g_redirect1;
+          argument = (FAR char *)g_redirect1;
         }
     }
 
@@ -1232,7 +1232,7 @@ static FAR char *nsh_argument(FAR struct nsh_vtbl_s *vtbl, FAR char **saveptr,
       /* Return NULL meaning that we are at the end of the line */
 
       *saveptr = pbegin;
-      pbegin   = NULL;
+      argument = NULL;
     }
 
   /* Otherwise, it is a normal argument and we have to parse using the normal