*: get rid of "MTYPE 0"

A few places are using 0 in place of the MTYPE_* argument.  The
following rewrite of the alloc tracking won't deal with that, so let's
use MTYPE_TMP instead.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
diff --git a/vtysh/vtysh_main.c b/vtysh/vtysh_main.c
index 02a19b7..e82771b 100644
--- a/vtysh/vtysh_main.c
+++ b/vtysh/vtysh_main.c
@@ -251,7 +251,7 @@
 	case 'c':
 	  {
 	    struct cmd_rec *cr;
-	    cr = XMALLOC(0, sizeof(*cr));
+	    cr = XMALLOC(MTYPE_TMP, sizeof(*cr));
 	    cr->line = optarg;
 	    cr->next = NULL;
 	    if (tail)